Pc qui rame après l'avoir reformater

Bonjour,
mon pc rame qd je vais sur le net depuis que je l'ai reformater suite à un virus qui m'a mis en black aout .
que dois je faire s'il vous plait pour remedier à ce problème. voici les rapports d'analyse de Random's System Information Tool] :

Logfile of random's system information tool 1.06 (written by random/random)
Run by utilisateur at 2009-12-17 13:12:00
Microsoft Windows XP Édition familiale Service Pack 3
System drive C: has 238 GB (97%) free of 245 GB
Total RAM: 2047 MB (59% free)

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:12:17, on 17/12/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

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\logitech\lvmvfm\LVPrcSrv.exe
C:\WINDOWS\ATKKBService.exe
C:\Program Files\Orange\Antivirus Firewall\Anti-Virus\fsgk32st.exe
C:\Program Files\Orange\Antivirus Firewall\Common\FSMA32.EXE
C:\Program Files\Orange\Antivirus Firewall\Anti-Virus\FSGK32.EXE
C:\PROGRA~1\FICHIE~1\France Telecom\Shared Modules\FTRTSVC\0\FTRTSVC.exe
C:\Program Files\Orange\Antivirus Firewall\Common\FSHDLL32.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\spupdsvc.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Orange\Antivirus Firewall\FWES\Program\fsdfwd.exe
C:\Program Files\Orange\Antivirus Firewall\Anti-Virus\fssm32.exe
C:\Program Files\Microsoft IntelliType Pro\itype.exe
C:\Program Files\Microsoft IntelliPoint\ipoint.exe
C:\WINDOWS\RTHDCPL.EXE
C:\WINDOWS\system32\LVCOMSX.EXE
C:\Program Files\Orange HSS\Systray\SystrayApp.exe
C:\Program Files\Orange\Antivirus Firewall\Common\FSM32.EXE
C:\PROGRA~1\FICHIE~1\France Telecom\Shared Modules\AlertModule\0\AlertModule.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Orange\Antivirus Firewall\Anti-Virus\fsav32.exe
C:\Program Files\Orange HSS\Launcher\Launcher.exe
C:\Program Files\Orange HSS\connectivity\connectivitymanager.exe
C:\Program Files\Orange HSS\connectivity\CoreCom\CoreCom.exe
C:\Program Files\Orange HSS\connectivity\CoreCom\OraConfigRecover.exe
C:\PROGRA~1\FICHIE~1\France Telecom\Shared Modules\FTCOMModule\0\FTCOMModule.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\utilisateur\Local Settings\Temporary Internet Files\Content.IE5\73OUT5QC\RSIT[1].exe
C:\Program Files\trend micro\utilisateur.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
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 = https://www.msn.com/fr-fr/?ocid=iehp
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\Program Files\Orange HSS\SearchURLHook\SearchPageURL.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.5.4723.1820\swg.dll
O2 - BHO: LitmusBHO - {C6867EB7-8350-4856-877F-93CF8AE3DC9C} - C:\Program Files\Orange\Antivirus Firewall\NRS\iescript\baselitmus.dll
O3 - Toolbar: Browsing Protection Toolbar - {265EEE8E-3228-44D3-AEA5-F7FDF5860049} - C:\Program Files\Orange\Antivirus Firewall\NRS\iescript\baselitmus.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [itype] "C:\Program Files\Microsoft IntelliType Pro\itype.exe"
O4 - HKLM\..\Run: [IntelliPoint] "C:\Program Files\Microsoft IntelliPoint\ipoint.exe"
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\system32\LVCOMSX.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [SystrayORAHSS] "C:\Program Files\Orange HSS\Systray\SystrayApp.exe"
O4 - HKLM\..\Run: [ORAHSSSessionManager] C:\Program Files\Orange HSS\SessionManager\SessionManager.exe
O4 - HKLM\..\Run: [F-Secure Manager] "C:\Program Files\Orange\Antivirus Firewall\Common\FSM32.EXE" /splash
O4 - HKLM\..\Run: [F-Secure TNB] "C:\Program Files\Orange\Antivirus Firewall\FSGUI\TNBUtil.exe" /CHECKALL /WAITFORSW
O4 - HKLM\..\Run: [Google Quick Search Box] "C:\Program Files\Google\Quick Search Box\GoogleQuickSearchBox.exe" /autorun
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [swg] "C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [RegDokFRT] E:\RegistryDoktor 4.1\RegistryDoktor.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_5F1A57F0B9B89E2E.dll/cmsidewiki.html
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O15 - Trusted Zone: https://www.orange.fr/portail
O23 - Service: ATK Keyboard Service (ATKKeyboardService) - ASUSTeK COMPUTER INC. - C:\WINDOWS\ATKKBService.exe
O23 - Service: FSGKHS (F-Secure Gatekeeper Handler Starter) - F-Secure Corporation - C:\Program Files\Orange\Antivirus Firewall\Anti-Virus\fsgk32st.exe
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\Orange\Antivirus Firewall\FWES\Program\fsdfwd.exe
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - C:\Program Files\Orange\Antivirus Firewall\Common\FSMA32.EXE
O23 - Service: F-Secure ORSP Client (FSORSPClient) - F-Secure Corporation - C:\Program Files\Orange\Antivirus Firewall\ORSP Client\fsorsp.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom SA - C:\PROGRA~1\FICHIE~1\France Telecom\Shared Modules\FTRTSVC\0\FTRTSVC.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Logitech Process Monitor (LVPrcSrv) - Logitech Inc. - c:\program files\fichiers communs\logitech\lvmvfm\LVPrcSrv.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe