J ai un gros probleme virus tratbho

voici le resultat de hijacktis je ne sais quoi faire apres

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:03:21, on 2008-02-12
Platform: Windows Vista (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16575)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Alwil Software\Avast4\ashDisp.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe
C:\Windows\System32\rundll32.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Windows\system32\wbem\unsecapp.exe
C:\Program Files\Internet Explorer\IEUser.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\Macromed\Flash\FlashUtil9d.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\Windows\system32\SearchFilterHost.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.sympatico.ca/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe /startintray
O4 - HKCU\..\Run: [MS Juan] rundll32 "C:\Users\gillis\AppData\Local\Temp\igntgkfl.dll",run
O4 - HKCU\..\Run: [600deb4f] "rundll32.exe" "C:\Users\gillis\AppData\Local\Temp\kaolofqj.dll",b
O4 - HKCU\..\Run: [cmds] rundll32.exe C:\Users\gillis\AppData\Local\Temp\efeff.dll,c
O4 - HKUS\S-1-5-20\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE RÉSEAU')
O16 - DPF: {0B79F48A-E8D6-11DB-9283-E25056D89593} (F-Secure Online Scanner 3.1) - https://www.f-secure.com/en/home/support
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~2\GOEC62~1.DLL
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - C:\Windows\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Symantec Lic NetConnect service (CLTNetCnService) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe (file missing)
O23 - Service: Google Desktop Manager 5.7.801.1629 (GoogleDesktopManager-010108-205858) - Google - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: LiveUpdate Notice Service Ex (LiveUpdate Notice Ex) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe (file missing)
O23 - Service: My Web Search Service (MyWebSearchService) - MyWebSearch.com - C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwssvc.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\CyberLink\Shared files\RichVideo.exe
O23 - Service: SupportSoft Sprocket Service (dellsupportcenter) (sprtsvc_dellsupportcenter) - SupportSoft, Inc. - C:\Program Files\Dell Support Center\bin\sprtsvc.exe
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe
O23 - Service: Moteur Webroot Spy Sweeper (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe