stick.cfg - scaling dead/damper file
xxxx.hps - views (head position files, unique to each plane, there's a lot of them).
jsmap.cfg - j/s button mapping
jsforce.cfg - force feedback settings (if you have any)
xxx.slv - (salvo settings unique to each plane)
xxx.cfg (plane guns convergence configuration files unqiue to each plane, where xxx = plane type)
there are various other settings as well... if you're just loading on a new machine and keeping the same stick, it's easier just to copy the entire settings folder over to the new machine.
the only thing you'd have to do after would be to delete the video7.cfg file so the game will recognize what is probably a new vid card.