First: Stop thinking in terms of there being only one best. It's an incredibly limiting mindset, and has no real basis in reality. Some programs are BETTER at some things than others, but none are "best".
Second: You seem to be confusing firewalls and anti-virus programs. They are two completely different things, even if ZoneLabs and Symantec have blurred the lines a bit by bundling the two together. These are also both different from spyware/malware removers, since I'm on the general subject.
Firewalls filter network traffic, anti-virus programs catch viruses, worms, and trojans, and spyware/malware removers remove spyware/malware. Spyware/malware is similar in nature to viruses/worms/trojans, but the major distinction is spyware/malware almost always depends on a third party program, such as Internet Explorer, to operate.
Three: There are basically two free AV programs for Windows: AVG Free and Avast. I like AVG Free better, others prefer Avast. To each their own. Take a look at what each offers and decide for yourself which is the better fit for you.
I have windows XP Pro, and I was was wondering what is
the best free Anti Virus program better than the Windows
XP Pro Firewall.
Thanks for any help...