Open taskmanager, networking tab. If you have that much going out someone has definantly got his hooks in. Kill your connection and reinstall your firewall, or make sure the xp firewall is on before you connect again. First thing i'd do after that is go to an online virus scanner and see if it picks anything up.
Unless of course you're on dial-up, then i'd say dumeter is freaking out.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS