Computer Associates is offering a free 1-year license on a Firewall/Virus Checker Solution - EZ-Armor Security Suite. It claims to protect against worms, and Trojans as well - ICSA-certified to find 100% of viruses 'in the wild'. Free software offer expires 30/6/2004, but it appears if you download prior to that, you get a 1-year license, and after this runs out it is $49.95 to renew. However, a free year is worth it ....!
http://www.my-etrust.com/microsoft/
It appears that the Firewall is Zonelabs (Pro?) and I am not familiar with the Virus Checker.