Analyse d'un rapport Rapport de HijackThis

bonsoir à tous!
suite à une test effectué sur mon pc à l'aide de HijackThis V1-97-7, voici ci après le rapport affiché. Quelqu'un aurait il l'amabilité de me faire connaitre les items à cocher afin d'optimiser mon pc?
je vous remercie d'avance pour votre coopération
configuration de mon pc: Windows XP familliale SP2, norton antivirus

Logfile of HijackThis v1.97.7
Scan saved at 19:26:45, on 19/09/2004
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\WINDOWS\system32\cisvc.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Norton SystemWorks\Norton Antivirus\navapsvc.exe
C:\PROGRA~1\NORTON~1\NORTON~2\NPROTECT.EXE
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\snmp.exe
C:\PROGRA~1\NORTON~1\NORTON~2\SPEEDD~1\NOPDB.EXE
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
C:\Program Files\Olitec\USB ADSL\CnxDslTb.exe
C:\ATI-CPanel\atiptaxx.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\WINDOWS\system32\winprocessor.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkUFind.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Symantec\Web Tools\CKA.exe
C:\WINDOWS\system32\wtsit.exe
C:\Documents and Settings\François\Application Data\pstn.exe
C:\Program Files\Norton SystemWorks\Norton Antivirus\SAVScan.exe
C:\WINDOWS\system32\cidaemon.exe
C:\PROGRA~1\NORTON~1\NORTON~4\GHOSTS~2.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.couldnotfind.com/search_page.html?&account_id=134272
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.couldnotfind.com/search_page.html?&account_id=134272
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.couldnotfind.com/search_page.html?&account_id=134272
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,Shellnext = http://windowsupdate.microsoft.com/
R3 - URLSearchHook: (no name) - _{CFBFAE00-17A6-11D0-99CB-00C04FD64497} - (no file)
N3 - Netscape 7: user_pref("browser.startup.homepage", "http://www.netscape.fr"); (C:\Documents and Settings\François\Application Data\Mozilla\Profiles\default\nv9f0f3j.slt\prefs.js)
N3 - Netscape 7: user_pref("browser.search.defaultengine", "engine://C%3A%5CProgram%20Files%5CNetscape%5CNetscape%5Csearchplugins%5CNetscape_France.src"); (C:\Documents and Settings\François\Application Data\Mozilla\Profiles\default\nv9f0f3j.slt\prefs.js)
O2 - BHO: (no name) - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem219.dll
O2 - BHO: (no name) - {000020DD-C72E-4113-AF77-DD56626C6C42} - C:\WINDOWS\twaintec.dll
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {83DE62E0-5805-11D8-9B25-00E04C60FAF2} - (no file)
O2 - BHO: (no name) - {8F4E5661-F99E-4B3E-8D85-0EA71C0748E4} - C:\WINDOWS\wsem302.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: (no name) - {AEECBFDA-12FA-4881-BDCE-8C3E1CE4B344} - C:\WINDOWS\System32\nvms.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton SystemWorks\Norton Antivirus\NavShExt.dll
O2 - BHO: (no name) - {CE188402-6EE7-4022-8868-AB25173A3E14} - C:\WINDOWS\System32\mscb.dll
O2 - BHO: Url Catcher - {CE31A1F7-3D90-4874-8FBE-A5D97F8BC8F1} - (no file)
O2 - BHO: (no name) - {F4E04583-354E-4076-BE7D-ED6A80FD66DA} - C:\WINDOWS\System32\msbe.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton SystemWorks\Norton Antivirus\NavShExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: Copernic Agent - {F2E259E8-0FC8-438C-A6E0-342DD80FA53E} - C:\Program Files\Copernic Agent\CopernicAgentExt.dll
O4 - HKLM\..\Run: [CnxDslTaskBar] C:\Program Files\Olitec\USB ADSL\CnxDslTb.exe
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\ATI-CPanel\atiptaxx.exe
O4 - HKLM\..\Run: [GhostStartTrayApp] C:\Program Files\Norton SystemWorks\Norton Ghost\GhostStartTrayApp.exe
O4 - HKLM\..\Run: [QD FastAndSafe] C:\Program Files\Norton SystemWorks\Norton CleanSweep\QDCSFS.exe /démarrage
O4 - HKLM\..\Run: [winprocessor Update] winprocessor.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\RunServices: [winprocessor Update] winprocessor.exe
O4 - HKCU\..\Run: [ATI VIDEO REGKEY] ati2vid.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [winprocessor Update] winprocessor.exe
O4 - HKCU\..\Run: [SymKeepAlive] C:\Program Files\Symantec\Web Tools\CKA.exe
O4 - HKCU\..\Run: [WAPI] C:\WINDOWS\system32\wtsit.exe
O4 - HKCU\..\Run: [Microsoft Update Machine] MSlti32.exe
O4 - HKCU\..\Run: [Internet Explore Updates] yzr.exe
O4 - HKCU\..\Run: [Cccs] C:\Documents and Settings\François\Application Data\pstn.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Google Search - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Chercher avec Copernic Agent - C:\Program Files\Copernic Agent\Web\SearchExt.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~4\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O8 - Extra context menu item: Web Rebates - file://C:\Program Files\Web_Rebates\Sy1150\Tp1150\scri1150a.htm
O9 - Extra 'Tools' menuitem: Démarrer Copernic Agent (HKLM)
O9 - Extra button: Copernic Agent (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_file.php?bt=ie&p=8ed7d655940e7cbfadc3f140e191904d5170779c1451ea34585808392bb5a9ec48bd31258b709ec3f493e1e790bd3f61768f666e:3fdf1f5c28b3ed45336e8d63caa5842a
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1093443053700
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O16 - DPF: {8F48147B-78D9-40F9-ACC0-BDDE59B246F4} (AccountHelper Class) - http://register.tiscali.fr/configurateur/AccountHelper.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{70AF2C80-E29D-48E8-8FEB-E9C448F02BAF}: NameServer = 213.36.80.1 213.36.80.1

merci