Fenetre intempestive " trojan "

bonjour
ben voila sur mon pc tout neuf (et oui) apres 2installe successivent de xp je suis (je pense) infesté et nottament tres embetter par des fenetres styla (critical error, registry error etc etc).
depuis 2 jours meme mon fsecure semble ne plus vouloir se mettre a jour ....
j'ai fais un rapport hijackthis que je joint
quelqu'un pourrait m'aider ?
merci par avance
Logfile of HijackThis v1.99.1
Scan saved at 10:58:01, on 30/12/2006
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\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\spoolsv.exe
D:\Program Files\F-Secure\Anti-Virus\fsgk32st.exe
D:\Program Files\F-Secure\Anti-Virus\FSGK32.EXE
D:\Program Files\F-Secure\BackWeb\7681197\program\fsbwsys.exe
D:\Program Files\F-Secure\Anti-Virus\fssm32.exe
D:\Program Files\F-Secure\Common\FSMA32.EXE
D:\WINDOWS\System32\nvsvc32.exe
D:\Program Files\F-Secure\Common\FSMB32.EXE
D:\WINDOWS\System32\snmp.exe
D:\WINDOWS\System32\svchost.exe
D:\Program Files\F-Secure\Common\FCH32.EXE
D:\Program Files\F-Secure\Common\FNRB32.EXE
D:\Program Files\F-Secure\Anti-Virus\fsqh.exe
D:\Program Files\F-Secure\Common\FAMEH32.EXE
D:\Program Files\F-Secure\Anti-Virus\fsrw.exe
D:\Program Files\F-Secure\FWES\Program\fsdfwd.exe
D:\Program Files\F-Secure\Common\FIH32.EXE
D:\Program Files\F-Secure\Anti-Virus\fsav32.exe
D:\WINDOWS\Explorer.EXE
D:\Program Files\Analog Devices\Core\smax4pnp.exe
D:\Program Files\Analog Devices\SoundMAX\Smax4.exe
D:\WINDOWS\System32\RunDLL32.exe
D:\Program Files\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe
D:\PROGRA~1\TWINTO~1\MouseElf.EXE
D:\WINDOWS\System32\rundll32.exe
D:\WINDOWS\System32\wuauclt.exe
D:\Program Files\F-Secure\Common\FSM32.EXE
D:\WINDOWS\System32\ctfmon.exe
D:\Program Files\MSN Messenger\MsnMsgr.Exe
D:\PROGRA~1\F-Secure\ANTI-S~1\fsaw.exe
D:\Program Files\GilSoftware\WebMultiForfait\WMForfait.exe
D:\Program Files\F-Secure\FSGUI\fsguidll.exe
C:\FreeDial\FreeDial.exe
D:\WINDOWS\System32\svchost.exe
D:\Program Files\Internet Explorer\IEXPLORE.EXE
D:\Documents and Settings\doudou\Local Settings\Temp\Répertoire temporaire 3 pour hijackthis.zip\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - D:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAShCut.exe
O4 - HKLM\..\Run: [SoundMAXPnP] D:\Program Files\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [SoundMAX] "D:\Program Files\Analog Devices\SoundMAX\Smax4.exe" /tray
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE D:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [AdaptecDirectCD] "D:\Program Files\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [mouseElf] D:\PROGRA~1\TWINTO~1\MouseElf.EXE
O4 - HKLM\..\Run: [RealTray] D:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [DriveIcons] D:\Program Files\Realtek Semiconductor Corp\Card Reader Software\DriveIcon\DriveIcon.exe
O4 - HKLM\..\Run: [F-Secure Manager] "D:\Program Files\F-Secure\Common\FSM32.EXE" /splash
O4 - HKLM\..\Run: [F-Secure TNB] "D:\Program Files\F-Secure\TNB\TNBUtil.exe" /CHECKALL /WAITFORSW
O4 - HKCU\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "D:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [Camfrog] "D:\Program Files\Camfrog\Camfrog Video Chat 3.80\CamfrogNet.exe" 0 D:\Program Files\Camfrog\Camfrog Video Chat 3.80\Camfrog Video Chat.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = D:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Démarrage auto de WebMultiForfait.lnk = D:\Program Files\GilSoftware\WebMultiForfait\WMForfait.exe
O8 - Extra context menu item: &Block this popup - D:\Program Files\F-Secure\Anti-Spyware\blockpopups.htm
O9 - Extra button: IE Shield - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - D:\Program Files\F-Secure\Anti-Spyware\ieshield.dll
O9 - Extra 'Tools' menuitem: IE Shield... - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - D:\Program Files\F-Secure\Anti-Spyware\ieshield.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - D:\WINDOWS\System32\Shdocvw.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O10 - Unknown file in Winsock LSP: d:\program files\f-secure\fsps\program\fslsp.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O17 - HKLM\System\CCS\Services\Tcpip\..\{176E8A8A-9532-445E-B99F-C3DDB3BCFA57}: NameServer = 212.27.54.252 212.27.53.252
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - D:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - D:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O23 - Service: F-Secure Automatic Update (BackWeb Plug-in - 7681197) - F-Secure Automatic Update - D:\PROGRA~1\F-Secure\BackWeb\7681197\Program\SERVIC~1.EXE
O23 - Service: FSGKHS (F-Secure Gatekeeper Handler Starter) - F-Secure Corp. - D:\Program Files\F-Secure\Anti-Virus\fsgk32st.exe
O23 - Service: F-Secure Network Request Broker - F-Secure Corporation - D:\Program Files\F-Secure\Common\FNRB32.EXE
O23 - Service: fsbwsys - F-Secure Corp. - D:\Program Files\F-Secure\BackWeb\7681197\program\fsbwsys.exe
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - D:\Program Files\F-Secure\FWES\Program\fsdfwd.exe
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - D:\Program Files\F-Secure\Common\FSMA32.EXE
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - D:\WINDOWS\System32\nvsvc32.exe