Firewall that will work nicley with other software?

i currently run windows XP Service Pack 2, and i have webroot spy sweeper with anti-virus. I update my definitions daily, and i have other programs that clean my registry, and i run that about every once a week. my hard drive is defragged in real time, using Ashampoo's product magical defrag II. I learned recently that my windows firewall is good, but not great. Do i need a firewall from another company? will it interfere with my other programs? especially my spy sweeper, do to the fact that when i looked, a lot of firewalls have anti-virus embedded in them, i don't want the two programs to conflict, or any others for that matter. if its determined i need a firewall, which is the best to get?

Firewall that will work nicley with other software?cafe racer

I use the Zone Alarm free firewall on my home computer - free, and works well.

Here is one place you can download it from:

http://www.majorgeeks.com/ZoneAlarm_Free...

or google

"ZoneAlarm Free 7.0.362.000" for other sources

I also recommend a little utility called leaktest

http://www.grc.com/lt/leaktest.htm

It is designed to act as an intruder to test the capabilities of your firewall.

Firewall that will work nicley with other software?free anti virus

I've been using Zone Alarm for the past few years. if you set it just to work as a firewall, I don't think it would cause problems in other programs. http://www.zonealarm.com