I ran the FSX-X-Plane scenery converter on Plum Island to see what would happen. Result? It's not too bad for a first pass. The buildings and objects are all there, and properly textured (mostly). There are numerous draw-order issues, the trees look like crap because they're no long flat-shaded, and of course it couldn't deal with my FSX phototerrain at all. I get the feeling that with some massaging, it might work though.
Bone, I was having no luck with TrackIR in the 9.0 demo as well. In the version I bought (9.21) it seems to work just dandy. I think Austin fixed something between then and now. If you're curious to try it, you might update to 9.2 or 9.3 and see if that fixes it for you.