The wireless controller never works on the PC. Not yet anyway.
The wired controllers, however, do (in most cases). The difference between the "PC" and non-PC branded ones are the driver disk that comes supplied, and the extra few bucks added on for the priviledge. However, you can get the correct driver from Microsoft Update.
I would presume AlphaKP295's problems stem from expecting the wired controller to work without any drivers, and so failing, but then installing the drivers from the PC package, and so it worked then. If this was not the case, I apologise.
Synergy6