Probably. Before I connect, I take down my built-in Windows Firewall, but the one from the wireless router can't be undone. I've asked Dad before (it IS his router/Internet), and he doesn't approve of opening up ports for game stuff. If I want to connect to BNet, I have to go dialup. = Low speed, = lag, = taking up the entire house phone line, which gets used a lot more now. Even with my wireless crap, I can join TCP/IP games, though I can't start them.