probleme avec error safe

Bonjour, voila mon problème depuis quelques jours j'ai une pub error safe qui apparait, je n'arrive pas a m'en debarrasser. J'ai fait des scan adaware + spybot.
J'ai lancé hijackthis et en voici le résultat:

Logfile of HijackThis v1.99.1
Scan saved at 02:38:41, on 15/03/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe
C:\Program Files\HP\hpcoretech\hpcmpmgr.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb09.exe
C:\WINDOWS\bhetk.exe
C:\Program Files\Qymo\Ydkgsz.exe
C:\Program Files\ISTsvc\istsvc.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnf.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\claire\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - Default URLSearchHook is missing
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [AtiPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [ccApp] C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
O4 - HKLM\..\Run: [ccRegVfy] C:\Program Files\Fichiers communs\Symantec Shared\ccRegVfy.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe"
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [DeviceDiscovery] C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb09.exe
O4 - HKLM\..\Run: [epVsEfFM] C:\WINDOWS\bhetk.exe
O4 - HKLM\..\Run: [epV•[vòŠв–ö¨Î#C:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\bhetk.exe
O4 - HKLM\..\Run: [Vhrdlmhj] C:\Program Files\Qymo\Ydkgsz.exe
O4 - HKLM\..\Run: [IST Service] C:\Program Files\ISTsvc\istsvc.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ItLauncherAutoStart] C:\PROGRA~1\INSTAN~1\bin\ITLAUN~1.EXE -Embedding /AutoStart
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmesfr.dll (file missing)
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmesfr.dll (file missing)
O16 - DPF: {084DAC27-6FA3-4F55-9005-033F2F102F5C} (ITPPDiagIE Class) - http://data.jeuxclassiques.com/npwwg.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation Service (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: hpdj - HP - C:\DOCUME~1\claire\LOCALS~1\Temp\hpdj.exe
O23 - Service: Norton AntiVirus Auto Protect Service (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe

Merci à tous ceux qui voudront bien m'aider. :-P

Claire