goirish,

after you click on the gamepad icon in control panel.
you should see a window...click on advance
advance will being up a menu of veriouse gampad or control drivers you have.
Select the driver for your controller.

Then select perperties, this will bring up the calibration and setting menu.
This calibrates that controller only for the OS.

After that you still need to calibrate/assign within the sim/software itself.