Apparently the driver is already included in Windows 8, you just have to activate it:
1.1) Connect the receiver
1.2) Open Run
2) Type devmgmt.msc in the Start Menu and OK
3) Click the Unknown Device and "Update Driver"
4) "Browse my computer for driver"
5) Choose among a list of devices on my computer
6) Double click on Show All Devices
7) Microsoft
8) Xbox 360 Wireless Receiver for Windows (at the bottom)
9) A message warns you of the incompatibility of this driver with Windows 8, validate anyway.
10) And it is finished!
Since it works perfectly.