I'm interested in the same information too.
Over the weekend I purchased (minimal $) a Saitek R100 wheel w/ game port. I set it up (in Windows XP) by adding a custom controller as a 2 axis, 4 button, wheel. Once calibrated everything works well.
My problem is setting up the in game settings to make proper use of the steering wheel, buttons, and pedals. I played around with the settings in SpyHunter and got the acceleration pedal to work but I still had shifting and machine gun mapped to the same button. I'm sure with more tweeking I'll manage to set things up properly. I tried another game but was unable to get moving in it because I couldn't shift. I forget the game but its from Atari, has crude 3D polygones, and a loop-d-loop in it.
What I think we need is a document that shows the input settings for each wheel game that makes the best use of the controls we have.
I tried Star Wars with the wheel and pedals for fun. It was a challenge to use the wheel to move the crosshair right and left in conjunction with the pedals for up and down. At least I know everything works.
Cheers,
Civilan