Yeah, I didn't mean 15 minutes. It's been awhile since I've seen those problems.
Right click on My Network Places and choose Properties.
When Network Properties window opens, right click on your net connection and choose properties again and then go to advanced. There it is: check it off.
Which version of XP is this?
Here is another d/l which takes care of some malicious worms, etc.
http://www.microsoft.com/security/ma...e/default.mspx
You may look at that security section of MS and read up if you do this alot.