De l'aide SVP

Bonjour, j'ai un probleme avec mon pc, norton me trouve un virus mssmp.exe,
voila mon rapport Hijackthis

Logfile of HijackThis v1.99.1
Scan saved at 15:42:26, on 26/12/2006
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
D:\norton antivirus2004\navapsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
D:\norton antivirus2004\SAVScan.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\Java\j2re1.4.2_01\bin\jusched.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\Program Files\Messenger\msmsgs.exe
C:\PROGRA~1\MOZILL~1\FIREFOX.EXE
C:\WINDOWS\system32\wuauclt.exe
C:\Documents and Settings\Propriétaire\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://global.acer.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://global.acer.com/
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://global.acer.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\norton antivirus2004\NavShExt.dll
O2 - BHO: Bar888 - {C1B4DEC2-2623-438e-9CA2-C9043AB28508} - C:\PROGRA~1\FICHIE~1\{3B1B1~1\Bar888.dll
O3 - Toolbar: Bar888 - {C1B4DEC2-2623-438e-9CA2-C9043AB28508} - C:\PROGRA~1\FICHIE~1\{3B1B1~1\Bar888.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - D:\norton antivirus2004\NavShExt.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [Spooler SubSystem App] C:\WINDOWS\System32\spooIsv.exe
O4 - HKLM\..\Run: [Local Security Authority Service] C:\WINDOWS\System32\lssas.exe
O4 - HKLM\..\Run: [Services] C:\WINDOWS\System32\sysmicro.exe
O4 - HKLM\..\Run: [{2B1B1302-07CB-1036-0902-040412200021}] "C:\Program Files\Fichiers communs\{2B1B1302-07CB-1036-0902-040412200021}\Update.exe" mc-110-12-0000144
O4 - HKLM\..\Run: [Microsoft Security Monitor Process] mssmp.exe
O4 - HKLM\..\Run: [Network Host Service] lregtxr32.exe
O4 - HKLM\..\Run: [Microsft Security Monitor Process] cmh.exe
O4 - HKLM\..\Run: [SiSUSBRG] C:\WINDOWS\SiSUSBrg.exe
O4 - HKLM\..\Run: [Windows Config System] config.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_01\bin\jusched.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [NAV CfgWiz] C:\Program Files\Fichiers communs\Symantec Shared\CfgWiz.exe /GUID NAV /CMDLINE "REBOOT"
O4 - HKLM\..\RunServices: [Microsoft Security Monitor Process] mssmp.exe
O4 - HKLM\..\RunServices: [Network Host Service] lregtxr32.exe
O4 - HKLM\..\RunServices: [Microsft Security Monitor Process] cmh.exe
O4 - HKLM\..\RunServices: [Windows Config System] config.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NVMCTRAY.DLL,NvTaskbarInit
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
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://global.acer.com/
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: COM+ Messages - Unknown owner - C:\WINDOWS\System32\svchosts.exe" -e mc-110-12-0000144 (file missing)
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - D:\norton antivirus2004\navapsvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - Unknown owner - C:\WINDOWS\System32\nvsvc32.exe (file missing)
O23 - Service: SAVScan - Symantec Corporation - D:\norton antivirus2004\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe

Quelqu'un aurait-il de l'aide à m'apporter svp ?
Merci bien