Before I had to rebuild my computer due to either a hacker or a virus that 'slipped' through, I ran Zone Alarm. I absolutely hated it, it was always popping up and asking you the same annoying questions. Now that I have my computer back up and running, I am trying to decide on what firewall to use. I found this article to be very helpful, and have found other articles there to be correct and useful in the past. I hope the link below works:
http://www.pcworld.com/features/arti...30,pg,4,00.asp