Download HiJackThis, run it and post the log here.
Ive updated to IE 7 but the pop ups are still there.
Logfile of Trend Micro HijackThis v2.0.0 (BETA)
Scan saved at 19:46:39, on 05/01/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
Boot mode: Normal
Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\Ati2evxx.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\system32\Ati2evxx.exe
D:\WINDOWS\Explorer.EXE
D:\WINDOWS\system32\spoolsv.exe
D:\WINDOWS\System32\svchost.exe
C:\acer\epm\epm-dm.exe
D:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
D:\WINDOWS\system32\ctfmon.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\Documents and Settings\David\My Documents\HiJackThis_v2.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.yahoo.co.uk/
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
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext =
http://windowsupdate.microsoft.com/
O2 - BHO: BDEX System - {C4248759-304D-477D-A1B3-F706CF99756D} - D:\WINDOWS\domnftwlvq.dll
O4 - HKLM\..\Run: [EPM-DM] c:\acer\epm\epm-dm.exe
O4 - HKLM\..\Run: [ePowerManagement] C:\Acer\ePM\ePM.exe boot
O4 - HKLM\..\Run: [ATIPTA] D:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKCU\..\Run: [ctfmon.exe] D:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -
http://www.update.microsoft.com/win...ls/en/x86/client/wuweb_site.cab?1197560354023
O21 - SSODL: bvtqfvx - {C37B207D-DBEF-47FF-ABBB-DB51766AFE80} - D:\WINDOWS\bvtqfvx.dll (file missing)
O21 - SSODL: alxvdvm - {72E3EBF4-DD49-4102-AF94-BFD51D8B86BC} - D:\WINDOWS\alxvdvm.dll
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - D:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - D:\WINDOWS\system32\browseui.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - D:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: O&O Defrag 2000 (OOD2000) - O&O Software GmbH - D:\WINDOWS\system32\OOD2000.exe
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End of file - 3573 bytes