I used to use zonealarm but i had many many problems with it causeing the computer to freeze up and it slows speeds immensly. My reccomendation, see if you "buy" mcafee personal firewall and viruscan 8 professional. It will eliminate all of your problems, at least it did mine. I used to love zonealarm, its a great program, but there is tons of bugs in it, and i had the full professional version.