There is a stubborn malware in my system that keeps changing my IE search bar to http://www.websearch.com/ie.aspx?tb_id=50181. Spyware Guard keeps telling me that the IE search bar has been changed to this web address. I have done everything I can think of, including not limited to the following:

1. Shut off the restore function. My OS is Windows XP Pro.
2. AVG does not catch it.
3. Scan and clean using Spy-bot Version 1.3.
4. Scan and clean using Ad-aware SE 1.04.
5. Scan and clean using TDS-3.
6. Erasing all restore files on the system.
7. Using regedit to clean out 'websearch' items in the registry.
8. Deleting all files in quarantine.
9. leaning the system using Spyware blaster.

What else can I do? Tried to use the tools in spywareinfo.com but site down.

Please help.