Voici le log : 
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15:24:06, on 16/01/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal
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:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\system32\RUNDLL32.EXE
D:\Softs\Adobe\Reader 9.0\Reader\Reader_sl.exe
D:\Softs\Java\jre6\bin\jusched.exe
D:\Softs\LogMeIn Hamachi\hamachi-2.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\PnkBstrA.exe
C:\WINDOWS\system32\PnkBstrB.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\trend micro\hijackthis.exe
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = go.microsoft.com…
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = go.microsoft.com…
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = go.microsoft.com…
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = go.microsoft.com…
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - {E312764E-7706-43F1-8DAB-FCDD2B1E416D} - (no file)
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Programme d’aide de l’Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java™ Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - D:\Softs\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - D:\Softs\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: (no name) - {B922D405-6D13-4A2B-AE89-08A030DA4402} - (no file)
O4 - HKLM…\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM…\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM…\Run: [nwiz] nwiz.exe /install
O4 - HKLM…\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM…\Run: [Adobe Reader Speed Launcher] “D:\Softs\Adobe\Reader 9.0\Reader\Reader_sl.exe”
O4 - HKLM…\Run: [Adobe ARM] “C:\Program Files\Fichiers communs\Adobe\ARM\1.0\AdobeARM.exe”
O4 - HKLM…\Run: [SunJavaUpdateSched] “D:\Softs\Java\jre6\bin\jusched.exe”
O4 - HKCU…\RunOnce: [Shockwave Updater] C:\WINDOWS\system32\Adobe\SHOCKW~1\SWHELP~1.EXE -Update -1103471 -“Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7” -“http://cc.porsche.com/icc_euro/ui/pva/application/bpModules/interior_3D.jsp?pluginsInstalled=true&RT=1263573567986”
O4 - HKUS\S-1-5-18…\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User ‘SYSTEM’)
O4 - HKUS.DEFAULT…\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User ‘Default user’)
O8 - Extra context menu item: E&xporter vers Microsoft Excel - D:\Softs\MICROS~1\OFFICE11\EXCEL.EXE…
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - D:\Softs\MICROS~1\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra ‘Tools’ menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - www.update.microsoft.com…
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - update.microsoft.com…
O23 - Service: LogMeIn Hamachi 2.0 Tunneling Engine (Hamachi2Svc) - LogMeIn Inc. - D:\Softs\LogMeIn Hamachi\hamachi-2.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
O23 - Service: PnkBstrB - Unknown owner - C:\WINDOWS\system32\PnkBstrB.exe
–
End of file - 4916 bytes