
There a number of free spyware removal tools out there here are some of the more popular ones. I would recommend at least three programs, some might think that's overkill. Remember that no one program can get rid of all the spyware programs out there, some do a better job than others.
Ad-Aware SE Personal - this free spyware removal tool provides you with advanced protection against spyware.
Spyware Blaster - SpywareBlaster can help keep your system spyware-free and secure, without interfering with the "good side" of the web.
Spybot Search and Destroy - the name says it all.
Microsoft Windows Defender - features Real-Time Protection, a monitoring system that recommends actions against spyware when it's detected.
AVG Anti-Spyware - efficient solution against the new generation of threats spreading over the internet
Super Anti-Spyware - Detect and Remove Spyware, Adware, Malware, Trojans, Dialers, Worms, KeyLoggers, HiJackers, Parasites
Hijack This - hijacker detector and remover.
Spyware Terminator - remove spyware, adware, trojans, keyloggers, home page hijackers and other malware threats
CCleaner - system optimization and privacy tool, removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space, cleans traces of your online activities such as your Internet history