Well, just to follow up... I did manage to hook up an Arduino via bluetooth (using a BlueSMiRF board) and control a ppjoy device via serial. Too bad that was for a project at work... but at least it does work.

The bluetooth part I could do without... there are all sorts of delays and general badness with that... I'm surprised that the wiimote actually uses bluetooth...

Anyways, on a totally unrelated project, I managed to create a GlovePIE script to remap my X52's axes based on the mode switch... it remaps the X52's axes to 3 ppjoy devices, which are themselves mapped in the sim... quite a bit of trouble, but it was worth it... GlovePIE is infinitely customizable, and I recently found out that it can even talk  (it can use Win7's TTS feature, and it speaks with Microsoft Anna's voice  ), with this approach, I could easily have a mode for fixed-wing, and another with reversed throttle for chopper collectives.

Now I gotta find a way to send data from the sim through the serial stream... that's a little harder I suppose... it might be a while before I make any headway with that...

Well, my project is taking good shape in my head now... I can perfectly visualize the LEDs blinking to the OMI markers

Cheers