I found a shop that sells USB devices that show up as 2 configurable joysticks in windows. This way you get the radio transmitter to work in FMS among other applications.
The real beauty is that you can buy separate cables to separate controllers, for just a few euros a piece. So even if you change your radio transmitters make you do not have to buy a new expensive device as with other manufacturers, just buy the cable for a few euros and you are ready to go again!
The url: http://www.mftech.de/