Make your own XBox to USB adapter

from Diddy Wolf:

Make your own Xbox to USB addaptor! All ya need are basic soldering skills and a few parts. If your xbox pad has one of those break away connectors, all you need is an xbox extension cable and a cheap usb mouse (to salvage the cable from. it's cheaper then buying an actual cable). Strip the cables, match up the wires, install xbcd, and there ya go. I made one to use for my beat pad pro and it works perfectly. there are a number of addaptors out there already, as well as more tutorials for how to make your own. Note that I have not used the products at the fallowing links, but the principal of them all is the same, their just hooking up the matching wires from the xbox connector to a standard usb one.

XBOX to USB Adapter w/Green LED (Transparent)

http://www.geeks.com/details.asp?invtid=PX-AD01&cpc=SCH

http://www.mdofpc.com/onlinestore/xbox-to-usb-adapter-wgreen-led-transparent-p-8437.html

Controller to PC adapter

http://secure.llamma.com/catalog/product_info.php?cPath=27&products_id=78

(similar to above)

http://www.midwest-games.com/xboxxboxtopc.html

Lik-sang even has one!

http://www.lik-sang.com/info.php?category=83&products_id=2701&