My list of top anti-spyware/anti-virus programs to use
AVG Anti-Virus (Freeware and Shareware)-most popular
NOD32 (Shareware-not free)
Kaspersky Anti-Virus (Shareware)
Spybot-Search and destroy -Rated one of the best
CCleaner -”CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system -makes your computer faster!
If you have any others to add please use the comments.