There are 5 scan and removal programs at http://reviews.cnet.com/5208-6132-0.html?forumID=32&threadID=1313&start=0 with further discussion on how to proceed up one level to the use of Hijackthis.
I am running WinXP Pro on a 2.4ghz computer w/512mb ram. Something has installed itself on my computer that changes my homepage in Internet Explorer 6.0. The page it changes it to is "Find4U.net" I have gone into the registry and deleted all references but it keeps coming back when I reboot. I downloaded and installed Ad-aware and it finds the "find4u" culprit and deletes it, but each time I reboot, its back. Obviously there is another file or program, running below radar, that regenerates the "find4u" page. Any suggestions on tracking this down?