[Lejo]

Why not trying a headtracking device which doesn't need a headset and LED lights?

It is called FaceTrackNoIR.
It really works, you only have to d/l their freeware. I experimented with it and got it working in IL2.

You can d/l here:
http://facetracknoir.sourceforge.net/home/default.htm

Info here:
http://www.sas1946.com/main/index.php/topic,7689.0.html