Dude, check it out, I've been posting MUCH more now. Me and simplex and xshadowxdemonz won't stop until we have 1,000 lol. I have 330 right now but will have much more once you see this message. I know you don't care, I'm just letting you know.
Then there is no way. If you had the $100 Wireless Adapter Microsoft sells for the Xbox 360 then you could connect to the same source your computer is connected to.