Sorry I'll expand on that...
an Xbox live cable (used to connect the Xbox to the internet gateway) is just a straight through cat5 cable (in fact I'm using noe to conect my computer to my hub).
the system ink cable (used to connect two xboxes together, is a crossover cable.
you can connect more than one xbox (upto four I think), with regular cat5 cables and a regular hub allowingupto 16 players in any game on four TVs