System link for xbox 360

not 100% sure here but I believe you need an ethernet crossover cable anyone will do, but if your are connecting the two xbox's to a router for system link then normal ethernet cables will do.

From one Xbox 360 directly to another Xbox 360 you can use either a ethernet patch cable or a ethernet crossover cable. Xbox 360 has cable sensing technology and can use either one.

For hooking each Xbox 360 into a hub/switch/router, you can always use a ethernet patch cable, although some hubs/switches/routers also have cable sense and you can use a crossover cable if needed.

Also if both Xbox 360 have the wireless adapters you can connect them temporarily straight together with an AD-HOC wireless connection.

Can you use a standard regular ethernet cable?