Greetings Charles,
The Windows Firewall is part of Service Pack 2 so you cannot just uninstall
the firewall. You can disable it though if you are using a third party
firewall or have it properly configured if there are applications or
services that are being blocked. Are you having problems with certain
programs being blocked? If so, see the following Microsoft Knowledge Base
Article.
How to configure the Windows Firewall feature in Windows XP Service Pack 2
http://support.microsoft.com/default.aspx?scid=kb;en-us;875356
Eric Cross
Microsoft MVP (Windows Networking)
http://mvp.support.microsoft.com