Keep in mind: The PC drivers for the original Xbox controllers only work with windows XP 32-bit. Due to driver signing issues with Windows 7, it's not an easy feat. Almost impossible without some coding.
Just wanted to make you aware... I've researched this and ended up grabbing
this Xbox One controller for $39.99 on Black Friday at BestBuy.com. Works great with OFFICIAL drivers from Microsoft in Windows 7 64-bit. But although it's wireless, it only works with a PC if it's plugged in via USB. (For now).
D