I've just gotten an Xbox 360, and I'm trying to connect to Live wirelessly. I don't want to shell out $100 for a first party adapter, though. I've tried several things, and the last thing I did is starting to make me think that something's wrong with the X360. In that last test, I used my MBP with its AirPort connection shared to wired Ethernet in order to connect my 360 to my wireless network. On the diagnostic, it only got to the second step, IP Address. I've tried both patch and crossover cables. Does anyone know what I'm doing wrong?