Intercept Optical Joystick?

Does anyone know how to use the optical joystick on the Intercept as an analog joystick? I know you swipe your finger over it for selecting, but since it actually rocks in different directions, it would be a perfect controller for games like pacman, tetris, etc. The thing is, when I push it in a certain direction, it just registers as a generic click. Is there an app that can map it to the direction keys on the keypad or something?

Thanks!