Originally Posted by BellaBoo

If you are running the Windows XP Service Pack 1, the product is out of life cycle. Therefore, there is no updating for it. You need to update to service pack 2 or 3. It's free.

Here is picture guide to get to the firewall in XP running Service Pack 1.
http://www.uic.edu/depts/accc/lan/re...ewall.html#sp1