In AH2, go to Controls, click on Joystick, then Force Feedback. You can activate FF and regulate it on that menu. It works for a USB MSFFPro, so it might work for a game port version too.
But I turned it off anyway. AH doesn't need it, and it feels much stronger in AH than I remember in AW for example. Also, the stick will last a whole lot longer with the FF off.