Security

ZoneAlarm
http://www.zonelabs.com/store/content/company/zap_za_grid.jsp
ZoneAlarm is designed to protect your DSL or cable-connected PC from hackers. This program includes four interlocking security services: a firewall, an Application Control, an Internet Lock, and Zones. The firewall controls the door to your computer and allows only traffic that you understand and initiate.

Sygate Personal Firewall
http://www.zdnet.com/downloads/stories/info/0,10615,67566,.html
Sygate Personal Firewall is a bi-directional intrusion-defense system for your personal computer. It ensures that your computer is protected from hackers and other intruders while preventing unauthorized programs on your computer from accessing the network. Sygate Personal Firewall makes machines invisible to the outside world. It works on computers connected to a private network or the Internet. This program assures that your business, personal, financial, and other data is safe and secure.