I just got a new computer, and it came with norton internet security. I know that windows xp also has a built in firewall. I am hooked up to a network with a router that has a firewall. It is impossible to port forward on it, but you can create a DMZ so that it wouldnt block any incoming traffic to my individual pc. I just want to open up some ports so I can download using bittorrent and eventually emule. Can I do this with the built in windows xp firewall? Can I do this with the norton internet security? I also don't want to sacrifice safety in order to use bittorrent. Would either of these software firewalls be as safe as the built in firewall in my router? Thanks for any help.