We are on the same workgroup. Both of our computers can connect to the internet when directly connected to the DSL modem(external), but of course only one of us can be on at a time.Right now we're taking turns on who gets to connect to the modem directly. I have XP home he's got XP Pro. We both connected to the internet on the router for a few months until this problem came up. Since its a wireless router can interference from other signals disrupt the connection, but if that's true I shouldn't be able to connect either, that was just a thought I had.