Yet more XBL/Router/Hub questions. (1 Viewer)

Okay, my problem is this: I have 2 XBoxes, a computer, and RoadRunner. I know the MS wireless router (500) will work fine with one XBox and the computer, but can I throw on the other Xbox - through a hub? - onto the router and will it affect my connecting the two XBoxes for system link play? If it will, is there a way to set it up so that both Xboxes can use the cable modem along side the computer AND allow the two XBoxes to connect via system link standalone?

Thanks all.

Solution found.