Okay I've had this for a while and I never really figured out why the following happens.
I have an MS Precision Pro Sidewinder. It's the gameport (pre-USB) version. Okay, it has a trigger (1) it has a banana shaped second trigger (2) it has 2 more opposite of trigger 2 (3 and 4) it has 4 finger buttons labeled ABCD in front of the throttle (using your thumb for throttle puts fingers over these buttons) (that makes 5, 6, 7, and 8), and behind the throttle there's a thumb button with an arrow on it (I assume meant to be used as a shift button) (that's 9 buttons).
But in windows it says it has 10 buttons.
So is there a secret, hidden, camoflagued button I don't know about, or what? Windows is telling me it's got 10 buttons, and I'd love to have another button to map (currently have no extras to map to WEP)
EDIT: The "shift" button is actually #10, with #9 on the calibrate screen being the hidden button.