Besoin d'aide pour une analyse hijackthis SVP

Bonjour a tous, je vous présente mon problème :

Depuis hier soir mon pc rencontre de gros ralentissements,j'ai donc fait une analyse de virus avec mon antivirus antivir puis il a trouver certain virus dans le dossier c:\windows\sysWOW64. Après les avoir nettoyés le pc se comporté déjà un peu mieux mais toujours quelques ralentissements.
Il y a aussi depuis quelques temps le problème avec internet, quand je fais une recherche sur google et que je clique sur un lien proposé, firefox me renvoi sur une autre page qui n'a rien a voir ( souvent des pub ).
J'ai donc décidé de faire une analyse hijackthis mais ne comprenant rien a ce logiciel je voudrais , SVP, que quelqu'un m'aide a y voir plus claire.
Je vous remercie d'avance pour vos futurs réponses et vous souhaite une agréable journée.

analyse hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:12:35, on 14/02/2010
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v7.00 (7.00.6002.18005)
Boot mode: Normal

Running processes:
C:\Program Files\Logitech\Desktop Messenger\8876480\Program\backWeb-8876480.exe
C:\Program Files (x86)\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files (x86)\MyWebSearch\bar\1.bin\MWSOEMON.EXE
C:\Program Files (x86)\Common Files\InstallShield\UpdateService\ISUSPM.exe
C:\Users\Alexandre\AppData\Roaming\SystemProc\lsass.exe
C:\Program Files (x86)\NewTech Infosystems\NTI Backup Now 5\BkupTray.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\Logitech\QuickCam\Quickcam.exe
C:\Program Files (x86)\MyWebSearch\bar\1.bin\M3SRCHMN.EXE
C:\Program Files (x86)\Java\jre6\bin\jusched.exe
C:\Program Files (x86)\Common Files\Logishrd\LQCVFX\COCIManager.exe
C:\Program Files (x86)\Acer\Empowering Technology\eDataSecurity\x86\eDSMSNLoader32.exe
D:\programmes\firefox\firefox.exe
C:\Users\Alexandre\Downloads\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://homepage.acer.com/rdr.aspx?b=ACAW&l=040c&s=1&o=vp64&d=1006&m=aspire_x1700
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://hp.mywebsearch.com/mywebsearch/index.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://homepage.acer.com/rdr.aspx?b=ACAW&l=040c&s=1&o=vp64&d=1006&m=aspire_x1700
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://homepage.acer.com/rdr.aspx?b=ACAW&l=040c&s=1&o=vp64&d=1006&m=aspire_x1700
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = localhost:8800
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - {00A6FAF6-072E-44cf-8957-5838F569A31D} - C:\Program Files (x86)\MyWebSearch\bar\1.bin\MWSSRCAS.DLL
F2 - REG:system.ini: UserInit=userinit.exe
O1 - Hosts: ::1 localhost
O2 - BHO: (no name) - {00609A15-6FE9-4F89-A355-B8EE368184F1} - C:\Windows\SysWow64\GameUXLegacyGDFs32.dll
O2 - BHO: MyWebSearch Search Assistant BHO - {00A6FAF1-072E-44cf-8957-5838F569A31D} - C:\Program Files (x86)\MyWebSearch\bar\1.bin\MWSSRCAS.DLL
O2 - BHO: mwsBar BHO - {07B18EA1-A523-4961-B6BB-170DE4475CCA} - C:\Program Files (x86)\MyWebSearch\bar\1.bin\MWSBAR.DLL
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files (x86)\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files (x86)\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files (x86)\Google\GoogleToolbarNotifier\5.5.4723.1820\swg.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Program Files (x86)\Windows Live\Toolbar\wltcore.dll
O3 - Toolbar: Acer eDataSecurity Management - {5CBE3B7C-1E47-477e-A7DD-396DB0476E29} - C:\Program Files (x86)\Acer\Empowering Technology\eDataSecurity\x86\eDStoolbar.dll
O3 - Toolbar: My Web Search - {07B18EA9-A523-4961-B6BB-170DE4475CCA} - C:\Program Files (x86)\MyWebSearch\bar\1.bin\MWSBAR.DLL
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Program Files (x86)\Windows Live\Toolbar\wltcore.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files (x86)\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [PCMMediaSharing] "C:\Program Files (x86)\Acer Arcade Live\Acer HomeMedia Connect\Kernel\DMS\PCMMediaSharing.exe"
O4 - HKLM\..\Run: [BkupTray] "C:\Program Files (x86)\NewTech Infosystems\NTI Backup Now 5\BkupTray.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [LogitechQuickCamRibbon] "C:\Program Files (x86)\Logitech\QuickCam\Quickcam.exe" /hide
O4 - HKLM\..\Run: [MyWebSearch Plugin] rundll32 C:\PROGRA~2\MYWEBS~1\bar\1.bin\M3PLUGIN.DLL,UPF
O4 - HKLM\..\Run: [My Web Search Bar Search Scope Monitor] "C:\PROGRA~2\MYWEBS~1\bar\1.bin\m3SrchMn.exe" /m=2 /w /h
O4 - HKLM\..\Run: [MyWebSearch Email Plugin] C:\PROGRA~2\MYWEBS~1\bar\1.bin\mwsoemon.exe
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "D:\programmes\adobe reader\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKCU\..\Run: [LDM] C:\Program Files\Logitech\Desktop Messenger\8876480\Program\BackWeb-8876480.exe
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [swg] "C:\Program Files (x86)\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [MyWebSearch Email Plugin] C:\PROGRA~2\MYWEBS~1\bar\1.bin\mwsoemon.exe
O4 - HKCU\..\Run: [FlashGet 3] "C:\Program Files (x86)\FlashGet Network\FlashGet 3\Flashget3.exe" -minimize
O4 - HKCU\..\Run: [FlashGetBHO] "C:\Program Files (x86)\FlashGet Network\FlashGet 3\mxhelper.exe"
O4 - HKCU\..\Run: [PPAP] C:\ProgramData\PPLiveVA\Application\PPAP.exe
O4 - HKCU\..\Run: [ISUSPM] "C:\Program Files (x86)\Common Files\InstallShield\UpdateService\ISUSPM.exe" -scheduler
O4 - HKCU\..\Run: [RTHDBPL] C:\Users\Alexandre\AppData\Roaming\SystemProc\lsass.exe
O4 - HKCU\..\Run: [Sony Ericsson PC Companion] "C:\Program Files (x86)\Sony Ericsson\Sony Ericsson PC Companion\PCCompanion.exe" /systray /nologon
O4 - Startup: Eurobarre.lnk = C:\Program Files (x86)\Eurobarre\eb.exe
O4 - Global Startup: Logitech Desktop Messenger.lnk = C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LDMConf.exe
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbaredits/menusearch.jhtml?p=ZJxdm351YYFR
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files (x86)\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_96D6FF0C6D236BF8.dll/cmsidewiki.html
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\Office12\REFIEBAR.DLL
O13 - Gopher Prefix:
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.exe.imgfarm.com/images/nocache/funwebproducts/ei-4/ZwinkyInitialSetup1.0.1.1.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/MessengerGamesContent/GameContent/fr/uno1/GAME_UNO1.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~2\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: C:\Windows\System32\glu3232.dll,C:\Windows\System32\dpwsockx32.dll,C:\Windows\System32\GuidedHelp32.dll,C:\Windows\System32\drmmgrtn32.dll,C:\Windows\System32\fontsub32.dll,C:\Windows\System32\GuidedHelp3232.dll,C:\Windows\System32\dot3api32.dll,C:\Windows\System32\drprov32.dll,C:\Windows\System32\fphc32.dll,C:\Windows\System32\jly2wkfsn32.dll,C:\Windows\System32\dot3dlg32.dll,C:\Windows\System32\tdwxv5aj432.dll,C:\Windows\System32\framedyn32.dll,C:\Windows\System32\8a6dyvmb32.dll,C:\Windows\System32\dot3gpclnt32.dll,C:\Windows\System32\huc16o3zdp1tmz32.dll,C:\Windows\System32\rhzmy5d32.dll,C:\Windows\System32\3kcip2h32.dll,C:\Windows\System32\cznwia32.dll,C:\Windows\System32\mj49bs3fp32.dll
O23 - Service: Acer HomeMedia Connect Service - CyberLink - C:\Program Files (x86)\Acer Arcade Live\Acer HomeMedia Connect\Kernel\DMS\CLMSServer.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AMD External Events Utility - Unknown owner - C:\Windows\system32\atiesrxx.exe (file missing)
O23 - Service: Avira AntiVir Planificateur (AntiVirSchedulerService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Service d'état ASP.NET (aspnet_state) - Unknown owner - C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_state.exe (file missing)
O23 - Service: NTI Backup Now 5 Agent Service (BUNAgentSvc) - NewTech Infosystems, Inc. - C:\Program Files (x86)\NewTech Infosystems\NTI Backup Now 5\Client\Agentsvc.exe
O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)
O23 - Service: eDataSecurity Service - Egis Incorporated - C:\Program Files (x86)\Acer\Empowering Technology\eDataSecurity\x86\eDSService.exe
O23 - Service: Empowering Technology Service (ETService) - Unknown owner - C:\Program Files\Acer\Empowering Technology\Service\ETService.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files (x86)\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: LogMeIn Hamachi 2.0 Tunneling Engine (Hamachi2Svc) - LogMeIn Inc. - D:\programmes\hamachi\hamachi-2.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files (x86)\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files (x86)\Common Files\LightScribe\LSSrvc.exe
O23 - Service: Process Monitor (LVPrcS64) - Logitech Inc. - C:\Program Files\Common Files\LogiShrd\LVMVFM\LVPrcSrv.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: My Web Search Service (MyWebSearchService) - MyWebSearch.com - C:\PROGRA~2\MYWEBS~1\bar\1.bin\mwssvc.exe
O23 - Service: Nero BackItUp Scheduler 4.0 - Nero AG - C:\Program Files (x86)\Common Files\Nero\Nero BackItUp 4\NBService.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: nProtect GameGuard Service (npggsvc) - Unknown owner - C:\Windows\system32\GameMon.des.exe (file missing)
O23 - Service: NTI Backup Now 5 Backup Service (NTIBackupSvc) - NewTech InfoSystems, Inc. - C:\Program Files (x86)\NewTech Infosystems\NTI Backup Now 5\BackupSvc.exe
O23 - Service: NTI Backup Now 5 Scheduler Service (NTISchedulerSvc) - Unknown owner - C:\Program Files (x86)\NewTech Infosystems\NTI Backup Now 5\SchedulerSvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: Sony Ericsson OMSI download service (OMSI download service) - Unknown owner - C:\Program Files (x86)\Sony Ericsson\Sony Ericsson PC Suite\SupServ.exe
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files (x86)\CyberLink\Shared Files\RichVideo.exe
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files (x86)\Common Files\Steam\SteamService.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: wampapache - Apache Software Foundation - D:\programmes\wamp\bin\apache\apache2.2.11\bin\httpd.exe
O23 - Service: wampmysqld - Unknown owner - D:\programmes\wamp\bin\mysql\mysql5.1.36\bin\mysqld.exe
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)