Download Anti-Spyware Programs

UPDATE: This page is now outdated. Instead of using the following two tools, try AVG-Anti Spyware instead.
If you are running Windows you should also have anti-spyware programs running on the computer. I recommend running both Spybot Search & Destroy and Lavasoft's AdAware.

Spybot Search & Destroy has a great "immunize" feature, and AdAware is a good spyware scanner. Neither program is able to find everything so it's good to scan with both programs.