Problème page démarrage

Bonjour,
Ma page démarrage revient toujours à l'ouverture sur "Windows search" et je n'arrive pas à supprimer le R0 sur mon log (voir dessous).
Merci à qui voudra bien m'aider.
Vincent

Logfile of HijackThis v1.99.1
Scan saved at 22:15:33, on 20/11/05
Platform: Windows 98 SE (Win9x 4.10.2222A)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\EXPLORER.EXE
C:\MOUSE\SYSTEM\EM_EXEC.EXE
C:\PROGRAM FILES\COMPAQ\EASY ACCESS BUTTON SUPPORT\CPQEADM.EXE
C:\COMPAQ\INTERNET\CISRVR.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\WINDOWS\SYSTEM\W98EJECT.EXE
C:\PROGRAM FILES\NIKON\NKVIEW6\NKVMON.EXE
C:\PROGRAM FILES\SAGEM\SAGEM F@ST 800-840\DSLMON.EXE
C:\PROGRAM FILES\COMPAQ\EASY ACCESS BUTTON SUPPORT\BTTNSERV.EXE
C:\PROGRAM FILES\COMPAQ\EASY ACCESS BUTTON SUPPORT\EAUSBKBD.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\PROGRAM FILES\HIJACKTHIS.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = c:\windowssearch\windowssearch.html
O4 - HKLM\..\Run: [EM_EXEC] c:\mouse\system\em_exec.exe
O4 - HKLM\..\Run: [CPQEASYACC] C:\Program Files\Compaq\Easy Access Button Support\cpqeadm.exe
O4 - HKLM\..\Run: [EACLEAN] C:\Program Files\Compaq\Easy Access Button Support\eaclean.exe
O4 - HKLM\..\Run: [CISrvr Program] C:\COMPAQ\INTERNET\CISRVR.EXE
O4 - HKLM\..\Run: [Alogserv] C:\Program Files\McAfee\McAfee VirusScan\alogserv.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\Run: [SpySweeper] "C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE" /startintray
O4 - HKLM\..\RunServices: [McAfeeVirusScanService] C:\Program Files\McAfee\McAfee VirusScan\AVSYNMGR.EXE
O4 - Startup: w98Eject.lnk = C:\WINDOWS\System\w98eject.exe
O4 - Startup: NkvMon.exe.lnk = C:\Program Files\Nikon\NkView6\NkvMon.exe
O4 - Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Chercher avec Copernic - C:\Program Files\Copernic 2000\Search Extension.htm
O9 - Extra button: Copernic - {2A465936-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2000\Copernic.exe
O9 - Extra button: (no name) - {2A465934-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2000\Copernic.exe
O9 - Extra 'Tools' menuitem: Lancer Copernic - {2A465934-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2000\Copernic.exe
O9 - Extra button: Traduire - {99EFB53C-C965-43CF-9F45-52242D134187} - file://C:\Program Files\Copernic 2000\Translate.htm
O9 - Extra 'Tools' menuitem: &Traduire avec Gist-In-Time - {99EFB53C-C965-43CF-9F45-52242D134187} - file://C:\Program Files\Copernic 2000\Translate.htm
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\SYSTEM\Shdocvw.dll
O9 - Extra button: AOL Toolbar - {4982D40A-C53B-4615-B15B-B5B5E98D167C} - C:\PROGRAM FILES\AOL TOOLBAR\TOOLBAR.DLL
O9 - Extra 'Tools' menuitem: AOL Toolbar - {4982D40A-C53B-4615-B15B-B5B5E98D167C} - C:\PROGRAM FILES\AOL TOOLBAR\TOOLBAR.DLL
O16 - DPF: teleir_cert - https://static.ir.dgi.minefi.gouv.fr/secure/connexion/archives/ie4n4/teleir_cert.cab