Ma page de démarrage a changé

Bonsoir à tous,
mon ordi me fait des siennes. ma page d'accueil a changé et un message me dit que j'ai des spywares sur mon ordi.
Je vous envoie mon logfile. Si quelqu'un pouvait me dire ce qu'il faut fixer se serait super.
Bisous .

Logfile of HijackThis v1.97.7
Scan saved at 07:39:04, on 19/10/04
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\SYSTEM\MSTASK.EXE
C:\WINDOWS\SYSTEM\ATI2EVXX.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\PROGRAM FILES\ATI TECHNOLOGIES\ATI CONTROL PANEL\ATIPTAXX.EXE
C:\PROGRAM FILES\NORTON ANTIVIRUS\NAVAPW32.EXE
C:\PROGRAM FILES\ADAPTEC\EASY CD CREATOR 5\DIRECTCD\DIRECTCD.EXE
C:\WINDOWS\SYSTEM\STIMON.EXE
C:\PROGRAM FILES\FICHIERS COMMUNS\ADAPTEC SHARED\CREATECD\CREATECD50.EXE
C:\PROGRAM FILES\SAGEM\SAGEM F@ST800\DSLMON.EXE
C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\OUTLOOK.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\1036\WFXMSRVR.EXE
C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\1036\OLFMOD32.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
D:\TEMP\LOGICIELS TéLéCHARGéS\SPYWARE\HIJACKTHIS.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = about:NavigationFailure
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:NavigationFailure
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:NavigationFailure
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = about:NavigationFailure
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:NavigationFailure
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://freebox.free.fr/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:NavigationFailure
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {3638BE21-2157-11D9-BF98-4445CCC640C4} - C:\WINDOWS\SYSTEM\JNCOEPA.DLL
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [autoclk] autoclk.exe
O4 - HKLM\..\Run: [NAV DefAlert] C:\PROGRA~1\NORTON~1\DEFALERT.EXE
O4 - HKLM\..\Run: [Norton Auto-Protect] C:\PROGRA~1\NORTON~1\NAVAPW32.EXE /LOADQUIET
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Program Files\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [StillImageMonitor] C:\WINDOWS\SYSTEM\STIMON.EXE
O4 - HKLM\..\Run: [CreateCD50] C:\PROGRA~1\FICHIE~1\ADAPTE~1\CREATECD\CREATE~1.EXE -r
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [ATIPOLL] ati2evxx.exe
O4 - HKLM\..\RunServices: [ATISmart] C:\WINDOWS\SYSTEM\ati2s9ag.exe
O4 - Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st800\DSLMON.exe
O4 - Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Startup: Microsoft Outlook.lnk = C:\Program Files\Microsoft Office\Office\OUTLOOK.EXE
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O9 - Extra 'Tools' menuitem: Console Java (Sun) (HKLM)
O9 - Extra button: eBay - Homepage (HKLM)
O14 - IERESET.INF: START_PAGE_URL=http://freebox.free.fr/
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {EFB22865-F3BC-4309-ADFA-C8E078A7F762} (SysWebTelecomInt Class) - http://www.sponsoradulto.com/cab/fr/SysWebTelecomInt.cab