hi jpv:
It sounds like you do not have your SideWinder controller program running while you are in Aces High. Whenever that happens to me, the stick goes "limp" and is uncontrollable in the game. You should see the SW red and green logo in your sys tray which tells you the software is running in the background.
Tinker with the "dead zone" and "range of motion" settings in the Controller, and do the tests to see that the stick is functioning properly there before you go on to calibrate in AH.
If none of this helps, check MS web site... there may be a patch for it.
Hope this helps some.
eh?