Question relating between my mac and connecting to xbox live

hello everybody. well it was just my birthday and i gotz a butt-load of mony to burn and i have decided to get xbox live.

i have enough money for it and my freind gave the ethernet cable that came with his xbox. my house has 3computers all hooked up through airport. my comp is currently in my bedroom right now and is too far to hook up the ethernet obviously. BUT my xbox lay right beside my comp and i got this idea.

if my mac goes through airport, and if i hook up my ethernet cable from my xbox to my mac, will i be able to access xbox live? any help would be appreciated.

P.S : if im not able to do this, how much would the wireless adapter cost me?

-guitarist4life

A quick, 10 second google search, yielded me this:
How to share your Mac's internet connection with your Xbox

The wireless adapter for the xbox, last time I checked, was $100.