Virus Downloader et Adware.virtumionde

Bonjour,

Mon ordi est infecté par un virus trouver par NortonAntivirus sous le nom de dowloader dans C:\WINDOWS\SYSTEM32\awttsqo.dll
Le logiciel EWIDO trouve également ADWARE.VIRTUMIONDE dans le même fichier.
Je ne peut plus fermer la fenêtre d'alerte virus de Norton et wanadoo me demande tout le temps si je veut me connecter.

Merci de bien vouloir me dire comment me débarraser de tout ça.

Ci joint mon log Hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 18:21:10, on 14/10/2006
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
c:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
c:\Program Files\Norton Personal Firewall\NISUM.EXE
c:\Program Files\Norton Personal Firewall\ccPxySvc.exe
C:\Program Files\ewido anti-spyware 4.0\guard.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
c:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\windows\system\hpsysdrv.exe
C:\HP\KBD\KBD.EXE
C:\Program Files\Fichiers communs\Sonic\Update Manager\sgtray.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
C:\Program Files\ewido anti-spyware 4.0\ewido.exe
C:\Program Files\CA\eTrust Internet Security Suite\caissdt.exe
C:\Program Files\CA\eTrust Internet Security Suite\eTrust PestPatrol Anti-Spyware\PPActiveDetection.exe
C:\Program Files\SpywareGuard\sgmain.exe
C:\Program Files\SpywareGuard\sgbhp.exe
C:\Documents and Settings\Propriétaire\Bureau\Antivirus\HijackThis.exe
C:\Program Files\Wanadoo\Watch.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = https://abonnez-vous.orange.fr/404.html?404;https://abonnez-vous.orange.fr:443/index.php?id=482
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\Wanadoo\SEARCH~1.DLL
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - c:\Program Files\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [hpsysdrv] c:\windows\system\hpsysdrv.exe
O4 - HKLM\..\Run: [NvCplDaemon] "RUNDLL32.EXE" C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] "nwiz.exe" /installquiet /keeploaded /nodetect
O4 - HKLM\..\Run: [KBD] C:\HP\KBD\KBD.EXE
O4 - HKLM\..\Run: [StorageGuard] "C:\Program Files\Fichiers communs\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [AlcxMonitor] ALCXMNTR.EXE
O4 - HKLM\..\Run: [PS2] C:\WINDOWS\system32\ps2.exe
O4 - HKLM\..\Run: [Adware Defence] Msoft32.exe
O4 - HKLM\..\Run: [Andware Defence] Zsoft32.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: [Symantec NetDriver Monitor] "C:\PROGRA~1\SYMNET~1\SNDMon.exe" /Consumer
O4 - HKLM\..\Run: [SSC_UserPrompt] "C:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe"
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
O4 - HKLM\..\Run: [!ewido] "C:\Program Files\ewido anti-spyware 4.0\ewido.exe" /minimized
O4 - HKLM\..\Run: [CaISSDT] "C:\Program Files\CA\eTrust Internet Security Suite\caissdt.exe"
O4 - HKLM\..\Run: [eTrustPPAP] "C:\Program Files\CA\eTrust Internet Security Suite\eTrust PestPatrol Anti-Spyware\PPActiveDetection.exe"
O4 - HKLM\..\RunServices: [Adware Defence] Msoft32.exe
O4 - HKLM\..\RunServices: [Andware Defence] Zsoft32.exe
O4 - HKCU\..\Run: [NVIEW] rundll32.exe nview.dll,nViewLoadHook
O4 - Startup: SpywareGuard.lnk = C:\Program Files\SpywareGuard\sgmain.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE (file missing)
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE (file missing)
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
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: Symantec Proxy Service (ccPxySvc) - Symantec Corporation - c:\Program Files\Norton Personal Firewall\ccPxySvc.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - c:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton Personal Firewall Accounts Manager (NISUM) - Symantec Corporation - c:\Program Files\Norton Personal Firewall\NISUM.EXE
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe