Google search redirects to advertisements?

Please help its very annoying

Every time i search on google or yahoo i keep getting redirected to advertisements not all the time but most of the time.

Logfile of Trend Micro HijackThis v2.0.2

Scan saved at 10:59:08 PM, on 12/3/2009

Platform: Windows Vista (WinNT 6.00.1904)

MSIE: Internet Explorer v8.00 (8.00.6001.18828)

Boot mode: Safe mode with network support

Running processes:

C:\Windows\Explorer.EXE

C:\Program Files\Windows Media Player\wmpnscfg.exe

C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = Preserve

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =

O1 - Hosts: ::1 localhost

O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll

O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll

O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide

O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"

O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"

O4 - HKLM\..\Run: [AS00_WN311B] C:\Program Files\NETGEAR\WN311B\Utility\WN311B.exe /hide

O4 - HKLM\..\Run: [Zune Launcher] "c:\Program Files\Zune\ZuneLauncher.exe"

O4 - HKLM\..\Run: [MSConfig] "C:\Windows\System32\msconfig.exe" /auto

O4 - HKLM\..\RunOnce: [Uninstall Adobe Download Manager] "C:\Windows\system32\rundll32.exe" "C:\Users\John\AppData\Local\Temp\nos_uninstall_Adobe.dll",Uninstall /Get1noarp

O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe

O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE')

O13 - Gopher Prefix:

O23 - Service: AMD External Events Utility - AMD - C:\Windows\system32\atiesrxx.exe

O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe

O23 - Service: Netgear WN311B Wireless Control Service (WN311BFCS) - Ambit Microsystems - C:\Windows\system32\WN311BFCS.exe

O23 - Service: XAudioService - Conexant Systems, Inc. - C:\Windows\system32\DRIVERS\xaudio.exe

--

End of file - 3198 bytes

Please help i need to get rid of this thing

+ I use three types of free spyware (malwarebytes, spybot.. etc)

Im not buying no spyware removal products its all a scam