Un trojan bizaroïde qui se regénère

Salut, je suis victime d'une attaque d'un virus et j'ignore comment le détecter car j'ai tout essayé. Je laisse mon log pour une aide. Merci.
Logfile of HijackThis v1.99.1
Scan saved at 11:50:46, on 21/09/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\csrss.exe
D:\WINDOWS\SYSTEM32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\Explorer.EXE
D:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
D:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
D:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
D:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
D:\WINDOWS\system32\spoolsv.exe
D:\Program Files\Winamp\winampa.exe
D:\PROGRA~1\VISION~1\ONETOU~2.EXE
D:\WINDOWS\System32\CAP3RSK.EXE
D:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe
D:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
D:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
D:\WINDOWS\SYSTEM32\SPOOL\DRIVERS\W32X86\3\CAP3SWK.EXE
C:\themeGold55\CursorXP\CursorXP.exe
D:\Program Files\MSN Messenger\MsnMsgr.Exe
D:\Program Files\a2\a2guard.exe
D:\WINDOWS\system32\spool\drivers\w32x86\3\CAP3LAK.EXE
D:\PROGRA~1\INCRED~1\bin\IMApp.exe
D:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\wkcalrem.exe
D:\Program Files\GTCO CalComp\TabletWorks\TWCP.exe
D:\Program Files\WinZip\WZQKPICK.EXE
D:\WINDOWS\System32\alg.exe
D:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
D:\WINDOWS\System32\imapi.exe
D:\Program Files\Norton AntiVirus\navapsvc.exe
D:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
D:\WINDOWS\System32\svchost.exe
D:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe
D:\WINDOWS\System32\wdfmgr.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\PROGRA~1\NORTON~1\navw32.exe
D:\Program Files\Internet Explorer\IEXPLORE.EXE
D:\Documents and Settings\DOND\Bureau\D.hijackthis.de\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.fr/
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - D:\Program Files\Yahoo!\Companion\Installs\cpn1\yt.dll
O4 - HKLM\..\Run: [NeroFilterCheck] D:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [WinampAgent] D:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [CAP3ON] D:\WINDOWS\System32\spool\drivers\w32x86\3\CAP3ONN.EXE
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [OneTouch Monitor] D:\PROGRA~1\VISION~1\ONETOU~2.EXE
O4 - HKLM\..\Run: [HP Software Update] D:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe
O4 - HKLM\..\Run: [RemoteControl] "D:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [WorksFUD] D:\Program Files\Microsoft Works\wkfud.exe
O4 - HKLM\..\Run: [Microsoft Works Portfolio] D:\Program Files\Microsoft Works\WksSb.exe /AllUsers
O4 - HKLM\..\Run: [Microsoft Works Update Detection] D:\Program Files\Microsoft Works\WkDetect.exe
O4 - HKLM\..\Run: [ccApp] "D:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [SSC_UserPrompt] D:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] D:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKCU\..\Run: [CursorXP] C:\themeGold55\CursorXP\CursorXP.exe -s
O4 - HKCU\..\Run: [Yahoo! Pager] D:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
O4 - HKCU\..\Run: [MsnMsgr] "D:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [PPWebCap] D:\PROGRA~1\ScanSoft\PAPERP~1\PPWebCap.exe
O4 - HKCU\..\Run: [IncrediMail] D:\Program Files\IncrediMail\bin\IncMail.exe /c
O4 - HKCU\..\Run: [a-squared] "D:\Program Files\a2\a2guard.exe"
O4 - Startup: Check for OneTouch Updates.lnk = D:\Program Files\Visioneer OneTouch\WiseUpdt.exe
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = D:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Canon LASER SHOT LBP-1120 ª¬ºAµøµ¡.LNK = D:\WINDOWS\system32\spool\drivers\w32x86\3\CAP3LAK.EXE
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = D:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Works Calendar Reminders.lnk = ?
O4 - Global Startup: TabletWorks.lnk = D:\Program Files\GTCO CalComp\TabletWorks\TWCP.exe
O4 - Global Startup: WinZip Quick Pick.lnk = D:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: &Add animation to IncrediMail Style Box - D:\PROGRA~1\INCRED~1\bin\resources\WebMenuImg.htm
O8 - Extra context menu item: Download All by FlashGet - D:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: Download using FlashGet - D:\Program Files\FlashGet\jc_link.htm
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - D:\PROGRA~1\Yahoo!\Common\yhexbmesfr.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - D:\PROGRA~1\Yahoo!\Common\yhexbmesfr.dll
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - D:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - D:\PROGRA~1\FlashGet\flashget.exe
O16 - DPF: {1F831FA7-42FC-11D4-95A6-0080AD30DCE1} (InstaFred) - file://D:\Program Files\AutoCAD 2002 Fra\InstFred.ocx
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1124057278437
O16 - DPF: {78AF2F24-A9C3-11D3-BF8C-0060B0FCC122} (Contrôle d'AcDcToday) - file://D:\Program Files\AutoCAD 2002 Fra\AcDcToday.ocx
O16 - DPF: {AE563727-B4F5-11D4-A415-00108302FDFD} (NOXLATE-BANR) - file://D:\Program Files\AutoCAD 2002 Fra\InstBanr.ocx
O16 - DPF: {F281A59C-7B65-11D3-8617-0010830243BD} (Gestion d'AcPreview) - file://D:\Program Files\AutoCAD 2002 Fra\AcPreview.ocx
O17 - HKLM\System\CCS\Services\Tcpip\..\{2EB25359-2A1B-4F75-A584-B052A1938760}: NameServer = 192.168.60.1 192.168.60.2
O23 - Service: C-DillaSrv - C-Dilla Ltd - D:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - D:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - D:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: SAVScan - Symantec Corporation - D:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - D:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - D:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe