Every time my girlfriend's brother plugs his xbox into their router to run xbox live, he destroys the internet connection for the other computers in the house. He's a fairy worthless, self absorbed 17 year old who won't help anyone in the house fix it. I'm in Texas, she's in Ca, so I can't go over and work on it myself. Modem/Wireless Router is a 2 wire from Time Warner (which so far I've found to be a piece of crap). Her computer won't connect wirelessly after he does xbox live, and the one computer that is wired is extremely slow. Any ideas?