I heard about this a long time ago back when I was considering my options for hooking my original Xbox up to my high speed network. When I was looking up my options on Xbox's website I came along this Windows ICS
. I bought that $100 piece for hooking my Xbox 360 to my network wirelessly works well enough for me. Originally I had a Ethernet Cable linking it up but I wanted to do away with that long cable. I don't know if this will work since you have your PC hooked up wirelessly but its worth a shot right?