Page de démarrage bloqué

Bonjour,

Depuis peu ma page de démarrage IE a été remplacé par about:blank, et lorsque je cherche quelque chose par la google toolbar il y a une popup avec de la pub .... qui sort. J'ai fait un scan ad aware, spybot, et norton,n il me détécte des choses mais celles ci réapparaissent, voici mon scan hijackthis, quelles entrées supprimer et comment faire pour qu'elles ne réapparaissent pas merci :
Logfile of HijackThis v1.97.7
Scan saved at 17:49:41, on 25/04/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\drivers\CDAC11BA.EXE
D:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\nvsvc32.exe
D:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
D:\Program Files\MsgPlus.exe
C:\WINDOWS\Mixer.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
D:\Program Files\Winamp\winampa.exe
D:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\SAGEM\SAGEM F@st 800-908\dslmon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\WINDOWS\system32\ietv32.exe
D:\Program Files\Winamp\Winamp.exe
C:\WINDOWS\system32\msda.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\Gilles\Bureau\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\system32\wphny.dll/sp.html#12047
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Not Available
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\adobe\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {624D0ED6-FBD6-D488-B435-B1E924C175C0} - C:\WINDOWS\system32\applv.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [MessengerPlus3] "D:\Program Files\MsgPlus.exe"
O4 - HKLM\..\Run: [C-Media Mixer] Mixer.exe /startup
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ScanRegistry] C:\W
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\NeroCheck.exe
O4 - HKLM\..\Run: [WinampAgent] D:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe
O4 - HKLM\..\Run: [Zone Labs Client] "D:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [IEXPLORE.EXE] C:\Program Files\Internet Explorer\IEXPLORE.EXE
O4 - HKLM\..\Run: [SpywareStopper] D:\Program Files\spystop\spywarestopper.exe
O4 - HKLM\..\Run: [ietv32.exe] C:\WINDOWS\system32\ietv32.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKLM\..\RunOnce: [sdkki32.exe] C:\WINDOWS\system32\sdkki32.exe
O4 - HKLM\..\RunOnce: [javamc.exe] C:\WINDOWS\system32\javamc.exe
O4 - HKLM\..\RunOnce: [systb.exe] C:\WINDOWS\system32\systb.exe
O4 - HKLM\..\RunOnce: [msda.exe] C:\WINDOWS\system32\msda.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-908\dslmon.exe
O4 - Global Startup: FlowProtector 2005.lnk = D:\Program Files\CheckFlow\FlowProtector\FlowProtector2005.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: &Google Search - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Pages liées - res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O16 - DPF: teleir_cert - https://static.ir.dgi.minefi.gouv.fr/secure/connexion/archives/ie4n4/teleir_cert.cab
O16 - DPF: {0000000A-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/download/d/4/4/d446e8a9-3a86-4b59-bb19-f5bd11b40367/wmavax.CAB
O16 - DPF: {0000000A-9980-0010-8000-00AA00389B71} - http://download.microsoft.com/download/8/B/E/8BE028EC-F134-4AA0-84AB-64F76D6B9842/wmsp9dmo.cab
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
O16 - DPF: {2A32B14F-4D29-4EA3-AC54-E9B19F436CE7} (Scanner Class) - http://www.windowsecurity.com/trojanscan/TDECntrl.CAB
O16 - DPF: {33564D57-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/download/F/6/E/F6E491A6-77E1-4E20-9F5F-94901338C922/wmv9VCM.CAB
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1098959873134
O16 - DPF: {745395C8-D0E1-4227-8586-624CA9A10A8D} (AxisMediaControl Class) - http://si-home.ath.cx//activex/AMC.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{1EEDC055-8F62-49F4-8347-CE86CF5213AF}: NameServer = 213.228.0.23 212.27.32.176
O17 - HKLM\System\CS1\Services\Tcpip\..\{1EEDC055-8F62-49F4-8347-CE86CF5213AF}: NameServer = 213.228.0.23 212.27.32.176

merci