Spy Blaster at www.spyblaster.com is actually a rogue spyware tool that actually makes these problems worse. There are now a multitude of untrustworthy "spyware" products out there. These can be trusted:
Ad-aware, Pest Patrol, Spybot Search & Destroy, and Webroot Spy Sweeper
Spybot and Ad aware have free versions.
Be sure to run Ad Aware engine 6.181 and update to the latest "pattern" file every time.
Run Spybot 1.3 with the latest updates.
Often "cleaning" doesn't even work unless you turn off WinXP system restore and run removal in safe mode.
HijackThis.exe is good for finding browser helper objects.
Also, see my prior posting about using ActiveX filters.
Once you are really messed up with spyware it is often easier(and faster) to just wipe out your machine and start fresh.