ok this is the hijackthis file:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 8:28:34 PM, on 11/8/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal
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\Explorer.EXE
C:\Program Files\Ad Muncher\AdMunch.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Microsoft Shared\vnwbekj.exe
C:\Program Files\Common Files\System\grwwxgp.exe
C:\Program Files\Trend Micro\HijackThis\Hijack.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http://us.rd.yahoo.com/customize/ie/...ch/search.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http://us.rd.yahoo.com/customize/ie/.../www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http://us.rd.yahoo.com/customize/ie/.../www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar =
http://us.rd.yahoo.com/customize/ie/...ch/search.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://us.rd.yahoo.com/customize/ie/.../www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) =
http://us.rd.yahoo.com/customize/ie/.../www.yahoo.com
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: NetXfer - {83B80A9C-D91A-4F22-8DCF-EA7204039F79} - C:\Program Files\Xi\NetXfer\NXIEHelper.dll
O2 - BHO: NTIECatcher Class - {C56CB6B0-0D96-11D6-8C65-B2868B609932} - C:\Program Files\Xi\NetTransport 2\NTIEHelper.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [fyyrndi] C:\Program Files\Common Files\System\grwwxgp.exe
O4 - HKLM\..\Run: [yvtcxhx] C:\Program Files\Common Files\Microsoft Shared\vnwbekj.exe
O4 - Startup: AdMunch.lnk = C:\Program Files\Ad Muncher\AdMunch.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Block frame with Ad Muncher -
http://www.admuncher.com/request_wil...=menu_ie_frame
O8 - Extra context menu item: Block image with Ad Muncher -
http://www.admuncher.com/request_wil...=menu_ie_image
O8 - Extra context menu item: Block link with Ad Muncher -
http://www.admuncher.com/request_wil...d=menu_ie_link
O8 - Extra context menu item: Don't filter page with Ad Muncher -
http://www.admuncher.com/request_wil...enu_ie_exclude
O8 - Extra context menu item: Download all by Net Transport - C:\Program Files\Xi\NetTransport 2\NTAddList.html
O8 - Extra context menu item: Download by Net Transport - C:\Program Files\Xi\NetTransport 2\NTAddLink.html
O8 - Extra context menu item: Report page to the Ad Muncher developers -
http://www.admuncher.com/request_wil...menu_ie_report
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
and thanks for your help.