Old Bird,
With the USB interface plugged in, have you gone into the control panel and select gaming options. It should show "Ikarus Interface" with an "ok" status. If the interface is not there, either the interface is defective or there is a USB problem. Do you have any other USB devices hooked up to your computer that are working ok? If so, you might have a defective interface cable. If not, you might want to try the cable in another computer.

Marty