Virus WIN32-GAEL-3666 impossible à enlever

Bonjour,
J'ai attrapé le virus Virus WIN32-GAEL-3666 et malgrés un formatage de mon DD il est revenu :
Pouvez vous m'aider svp ?
voici le logfile HijackThis :
Merci,

Logfile of HijackThis v1.99.1
Scan saved at 19:16:40, on 20/11/2005
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\Dit.exe
C:\WINDOWS\AGRSMMSG.exe
C:\WINDOWS\system32\RunDll32.exe
C:\PROGRA~1\Medion\KeyStat\KeyStat.exe
C:\Program Files\Home Cinema\PowerDVD\PDVDServ.exe
C:\Program Files\Home Cinema\PowerCinema\PCMService.exe
C:\PROGRA~1\CA\ETRUST~1\realmon.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\Fichiers communs\CMEII\CMESys.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\IVT Corporation\BlueSoleil\BTNtService.exe
C:\Program Files\Home Cinema\PowerCinema\Kernel\TV\CLCapSvc.exe
C:\Program Files\CyberLink\Shared Files\CLML_NTService\CLMLServer.exe
C:\Program Files\CyberLink\Shared Files\CLML_NTService\CLMLService.exe
C:\Program Files\CA\eTrust Antivirus\InoRpc.exe
C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleil.exe
C:\Program Files\CA\eTrust Antivirus\InoRT.exe
C:\Program Files\CA\eTrust Antivirus\InoTask.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Home Cinema\PowerCinema\Kernel\TV\CLSched.exe
C:\WINDOWS\system32\fxssvc.exe
C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
C:\PROGRA~1\COMMON~1\X10\Common\x10nets.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\GrabIt\GrabIt.exe
C:\hackjthis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.free.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.aldi.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Dit] Dit.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Keyboard Status] C:\PROGRA~1\Medion\KeyStat\KeyStat.exe
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\Home Cinema\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [PCMService] "C:\Program Files\Home Cinema\PowerCinema\PCMService.exe"
O4 - HKLM\..\Run: [AntivirusRegistration] c:\program files\antivirus offer\etrust antivirus registration\EzAntivirusRegistrationCheck.exe
O4 - HKLM\..\Run: [Realtime Monitor] C:\PROGRA~1\CA\ETRUST~1\realmon.exe -s
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime -Delay
O4 - HKLM\..\Run: [CMESys] "C:\Program Files\Fichiers communs\CMEII\CMESys.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: &Recherche AOL Toolbar - res://C:\Program Files\AOL Toolbar\toolbar.dll/SEARCH.HTML
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\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: Recherche &Google - res://c:\program files\google\GoogleToolbar1.dll/cmsearch.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
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_01\bin\npjpi150_01.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_01\bin\npjpi150_01.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Fichiers communs\Microsoft Shared\Encarta Search Bar\ENCSBAR.DLL
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
O14 - IERESET.INF: START_PAGE_URL=http://www.aldi.com/
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1106243543703
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: BlueSoleil Hid Service - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BTNtService.exe
O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - C:\Program Files\Home Cinema\PowerCinema\Kernel\TV\CLCapSvc.exe
O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - C:\Program Files\Home Cinema\PowerCinema\Kernel\TV\CLSched.exe
O23 - Service: CyberLink Media Library Service - Cyberlink - C:\Program Files\CyberLink\Shared Files\CLML_NTService\CLMLServer.exe
O23 - Service: eTrust Antivirus RPC Server (InoRPC) - Computer Associates International, Inc. - C:\Program Files\CA\eTrust Antivirus\InoRpc.exe
O23 - Service: eTrust Antivirus Realtime Server (InoRT) - Computer Associates International, Inc. - C:\Program Files\CA\eTrust Antivirus\InoRT.exe
O23 - Service: eTrust Antivirus Job Server (InoTask) - Computer Associates International, Inc. - C:\Program Files\CA\eTrust Antivirus\InoTask.exe
O23 - Service: X10 Device Network Service (x10nets) - X10 - C:\PROGRA~1\COMMON~1\X10\Common\x10nets.exe