I have been using NIS 2005, but my subscription ran out, and it sucks resources so I wanted to try something new. I am now running AntiVir PE for viruses and Windows Defender and Spybot for spyware. I am not going to use XP's built in firewall, but I was wondering if I should install ZoneAlarm or something. I am behind a router with no ports forwarded, and always keep windows patched along with my other security software. I don't browse the web much in Windows, or answer e-mail. All of that is on my Linux box. Is it safe for me to run Windows without a 3rd party firewall in this situation?