I used the free version of Zone Alarm till around about 3 months ago. Then I upgraded - there was an offer on at my local pc world for ZA professional - dudes its great. Especially the email spam filter. It also has a good AV (no norton asimilating MY PC and cause all to crash). Theres a pop-up blocker and a spy/ad/tracker scanner too. I wholeheartedly recommend it.

I run a wireless network from this pc too.