Well you can start off by getting rid of the adware on your computer

Get hijackthis! and something thats not as obvious as regprot but works just as good. *Edited* And correct me if I'm wrong... but from the URL, Browser Hijack Blaster looks like its only out to protect agianst changes within the browser... and not agianst the modification of winsock and a bunch of various startup methods.

I also think that Spybot S&D, AdAware, & (ect)... is tottaly crap. It's nothing but downgraded alternatives to AV software. I find that most of the time they never even detect anything at all... much of which my AV detects when spybot S&D, AdAware, and other things don't. But even then alot of times AV fails to do just that also, so in the end 99% of the time I usually end up removing everything manually.