HIGHLY recommend you all visit
Ad-Aware by Lavasoft - Antivirus software, free spyware removal, firewall and download Ad-Aware. Great Ad-aware/Anti-Virus/Anti-Spyware program if you dont have it already. Also go here and download Crap Cleaner.
Redirecting... Crap Cleaner is great for removing unnecessary files/cookies and other garbage off of your machine and has alot of other cool features.