PIEDRA he probado denuevo lo que tu me has dicho , que ya lo habia hecho antes y NA DE NA ...................

Logfile of HijackThis v1.99.1
Scan saved at 21:09:28, on 03/03/2005
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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Microsoft Office\Office\OSA.EXE
C:\Program Files\Skype\Phone\Skype.exe
C:\WINDOWS\SYSTEM32\rundll32.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Hijackthis\HijackThis v.1.99.1\HijackThis_1.99.1.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.es/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.ncnumericable.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = NC NUMERICABLE
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Int ernet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - Default URLSearchHook is missing
O1 - Hosts: 69.20.16.183 auto.search.msn.com
O1 - Hosts: 69.20.16.183 search.netscape.com
O1 - Hosts: 69.20.16.183 ieautosearch
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - Global Startup: Démarrage d'Office.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - c:\Program Files\Microsoft Money\System\mnyviewer.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O20 - Winlogon Notify: RunServices - C:\WINDOWS\system32\o884lilq18qe.dll
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe

muchas gracias A LOS DOS