Mad Catz Andretti Racing Wheel

I know this is a long shot but whatever. I picked up a used andretti racing wheel at my local pawnshop but had no luck installing it, when i use the usb connection it detects it as an unknown device and when i use the gameport connection it says not connected. I downloaded the drivers for it but it only gives me some .dll, .isr and .isu files wich I have no idea what to do with. I know its not supposed to be compatable with XP but i read somewhere that it is following the proper procedure but he didnt say what that was. Can anyone help me out here?

From a pawnshop :sick: its probbly a pos lol.