Free gamepad to keyboard mapper.
CTK (ControllerToKeyboard) is a freeware tool, that allows you to play every game on windows with your gamepad.
You have to run CTK in the background and define the controlls in the optionsmenu of the game, by pressing the buttons from your gamepad. If you cant set the controlls in your game, click on 'config' and bind some other keys to the buttons.
Download:CTK (v1.5.0) (Win7, Vista, XP), Downloads: 22502
Latest screenshots of CTK (1.5.0):