Great firewall software. Normally costs $60.

License is for 1 year, up to 3 PC's.

http://www.zonealarm.com/security/en-us/cdn/pt/facebook.htm
Registration
(just enter your info. Don't worry about the identity guard 1 year free subscription, unless you want them to have your credit card info. You can close the identity guard window after you register for zonealarm pro.

Info:
http://www.zonealarm.com/security/en-us/zonealarm-pro-firewall-anti-spyware.htm