controller joy pad config

having problems configuring the controller to work properly, as i want to play Jet grind radio. I have a mouse, keyboard, and what im tryin to configure, a power wave pc game controller, which is usb and resembles a black xbox 360 controller. all the buttons work fine but it always uses both the d-pad and analog stick to move, but in a real dc, you use the d pad to move and the analog stick for camera, and more importantly spraying graffiti, can any one tell me how to fix this. No matter what i do i cant do the medium and large graffiti's, everything else works fine,

thanx, Coltzer