Anti Virus Replacements

[laura_seabrook]

I've been using a "free" copy of ZoneAlarm for the last year or so. However, as the trial period was over I decided to use some other software instead. I don't have a credit card and renewing ZoneAlarm was expensive and hard to do. I tried renewing it by joining SnapFish but even there, I can't get "free" photo prints without a credit card (so no Zone Alarm renewal).

At the moment I have bot Avast! and Comodo installed. There's a bit of overlap and potential for them to fight each other - Comodo, which I installed second, found all the quarantined stuff that Avast! had already moved, and wanted to move them again! I got Comodo because it has a proper firewall, but maybe I don't need to run the anti-virus component while I have Avast! running.

Any ideas on this? Which Free anti-virus and Firewall would/do you run under Windows XP, and why?