ok, I went to the xlink kai website and looked up setups that would work with kai. I chose setup C or the one where your modem goes into a router then into a hub then one cable to xbox and the other to pc. It said there shouldn't be any port forwarding required. I can sign on the pc kai just fine, but my xbox won't connect to it. The engine ip on the xbox is the same as my pc. I'm accepting any ip invites or whatever it's called from kai config. Any help?

don't try setting up XBMC until kai works using just the PC version .. just load a game and go to system link , load up kai on your PC and navigate to a game arena and see what happens ..