check this out... The RX2SIM module from RC ware allows you to use the Phoenix and Real Flight flight simulators wirelessly. No more cables.

NOTE:
You need a spares beastx !(For Connecting a receiver with separate servo output channels)
"Not really needed, I believe" I assume this is so you can put all settings in your radio rather than the sim software.. i would just use the options below

OR (Better option)

Just a Spektrum Satellite or Futaba Satellite (See Manual)



The RX2SIM module from RC ware allows you to use a variety of RC flight simulators wirelessly. By eliminating the need for you to connect your transmitter to a computer using a cable, you will be able to enjoy the simulator with greater convenience. The RX2SIM works with Phoenix and Real Flight simulators and you can use Spektrum or Futaba transmitters. Brilliant when you connect your flight sim to a big screen. The RX2SIM allows you to sit back in the comfort of your lounge chair and fly without the constraints of the cable. Order yours now

http://www.modelflight.com.au/rc-ware-rx2sim-wireless-multi-sim-adapter-1.html