I've been having a little trouble with my connection as of late. My brother took his xbox to a friend's house, and after he brought it back, whenever he signs on to Xbox Live, my main PC loses its connection. I can't stream music, access web pages or anything. The curious thing about it is that all the other computers that I've put on the network, one wired, one with a wireless card, both had no problems being on at the same time as the Xbox. I have a Linksys WRT54G, and all PCs run Windows. I'll be happy to provide any more information needed to help me work through this extremely annoying problem.