I assume you have the xbox 360 wireless control working with your computer already? If not there's a wireless receiver you need to buy in order to use a 360 controller with your computer. In order to use a Joystick with AHK you need to specific what buttons you want to do what. I don't use stars planner so I don't know how they do it but the list of joystick buttons for AHK can be found
here. You type in Joy1, Joy2, Joy3, etc for what button you want to correspond to what action, that's how Stars Hotkeys works at least.