Just want to share with you the software I use to protect my system. The nice part, it's free.
Main Antivirus: AVG -> www.free.avg.com
Anti Spyware: Superantispyware -> http://superantispyware.com/
Anti Malware: Malwarebytes -> www.malwarebytes.org
USB Vaccine: Protects virus that loads from external drive like flashdrives "Panda USB Vaccine" -> www.pandasecurity.com
Just drop-in your comments below. I'd gladly address it with the best that I can. :D