bhxob: Privateer was a DOS game, and this version runs in DOSBOX. DOSBOX will pick up your default game controller, and Privateer can make use of it. It works with my 360 controller. I have XPadder installed, though it is not needed for this game w/ DOSBOX. There is no force feedback that I'm aware of.
Whatever you have hooked up, It will only use one joystick (for pitch and yaw) and two buttons on the primary controller. Button one fires guns, button two gives you roll control with the joystick, and button one+two launches a missile.
Everything else is going to be controlled on your keyboard. If you want to bind extra buttons on your controller to keyboard commands with XPadder, you can do that.
You actually don't need XPadder because you can just hit ALT-F1 within DOSBox and assign buttons/axes to a keyboard function as you desire.
If you want, for example, to use your third gamepad-button to fire missiles, you click on return (which is fire a missile) and then on Add. Now press the gamepad-button you want to assign to this function an finally click save.