Impossible de modifier ma page de demarrage - internet explorer toujours page pub

Bonjour , lorsque je click sur IE , il m’envoie toujours vers le disque c:\secure32.html, et le lien sur cette page est:http://www.spy-sheriff.com/?advid=1 .J’ai utilisé tout les anti’spyware que je connais (micrpsoft , spyboot,…)
je ne prviens pas à effacer cette page ni à modifier la page de démarrage , il revient toujours sur cette page . Comment m’en débarasser.

J’ai également fait un log avec Hijackthis

Logfile of HijackThis v1.99.1
Scan saved at 14:30:29, on 24/05/2006
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\csrss.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\Windows Defender\MsMpEng.exe
C:\windows\System32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\system32\spoolsv.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\Program Files\ewido anti-malware\ewidoctrl.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\windows\System32\svchost.exe
C:\windows\system32\wdfmgr.exe
C:\windows\system32\Ati2evxx.exe
C:\windows\SOUNDMAN.EXE
C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\xuouc.exe
C:\windows\system32\kernels8.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpobnz08.exe
C:\Program Files\SAGEM\SAGEM F@st 800-908\dslmon.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\windows\system32\2224.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpoevm08.exe
C:\WINDOWS\System32\HPZipm12.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\Bin\hpoSTS08.exe
C:\Program Files\eMule\emule.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\MOI\Bureau\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = c:\secure32.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = c:\secure32.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = c:\secure32.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = c:\secure32.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = c:\secure32.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = c:\secure32.html
F2 - REG:system.ini: Shell=explorer.exe “C:\Program Files\Fichiers communs\Microsoft Shared\Web Folders\ibm00001.exe”
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O4 - HKLM\…\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\…\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\…\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
O4 - HKLM\…\Run: [QuickTime Task] “C:\Program Files\QuickTime\qttask.exe” -atboottime
O4 - HKLM\…\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\…\Run: [TkBellExe] “C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe” -osboot
O4 - HKLM\…\Run: [Windows Defender] “C:\Program Files\Windows Defender\MSASCui.exe” -hide
O4 - HKLM\…\Run: [ZPoint] C:\windows\system32\winmuse.exe
O4 - HKLM\…\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\…\Run: [dmxjs.exe] C:\windows\system32\dmxjs.exe
O4 - HKLM\…\Run: [SysTray] C:\Program Files\xuouc.exe
O4 - HKLM\…\Run: [System] C:\windows\system32\kernels8.exe
O4 - HKLM\…\RunServices: [SystemTools] C:\windows\system32\kernels8.exe
O4 - HKCU\…\Run: [Skype] “C:\Program Files\Skype\Phone\Skype.exe” /nosplash /minimized
O4 - HKCU\…\Run: [ctfmon.exe] C:\windows\system32\ctfmon.exe
O4 - HKCU\…\Run: [MSMSGS] “C:\Program Files\Messenger\msmsgs.exe” /background
O4 - HKCU\…\Run: [shell] “C:\Program Files\Fichiers communs\Microsoft Shared\Web Folders\ibm00001.exe”
O4 - HKCU\…\Run: [WinMedia] C:\windows\system32\vxgame6.exe3072.exe
O4 - Global Startup: hp psc 2000 Series.lnk = C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpobnz08.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-908\dslmon.exe
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra ‘Tools’ menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
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
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/…b?1128166628468
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMesse…pDownloader.cab
O17 - HKLM\System\CCS\Services\Tcpip\…\{176C66BD-C68D-4F75-9228-6BA287B0060B}: NameServer = 85.255.115.93,85.255.112.14
O17 - HKLM\System\CCS\Services\Tcpip\…\{349ED159-67ED-4BD4-9E4D-330784A8FD3D}: NameServer = 85.255.115.93,85.255.112.14
O17 - HKLM\System\CS1\Services\Tcpip\…\{176C66BD-C68D-4F75-9228-6BA287B0060B}: NameServer = 85.255.115.93,85.255.112.14
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - “C:\PROGRA~1\MSNMES~1\msgrapp.dll” (file missing)
O20 - Winlogon Notify: artm_newreg - C:\Documents and Settings\All Users\Documents\Settings\artm_new.dll (file missing)
O20 - Winlogon Notify: xdudtt - xdudtt.dll (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\windows\System32\Ati2evxx.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: ewido security suite control - ewido networks - C:\Program Files\ewido anti-malware\ewidoctrl.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

merci pour l’aide