Thanks, that was the problem. I forgot that about a week ago I had edited my Group Policies and disabled Windows Messenger. I change it from disabled to "not load on startup" and it works fine now.

I am trying to help my brother-in-law install Windows XP Pro on his computer. I don't know the specs of it off-hand, although I can get them if needed. I do know it is a Dell Dimension 4100 that came ...