Hi Ray, you don't say what O/S you're using, but locate the C:\......\AirNav\AirNav RadarBox\Drivers file, connect RB, go to Control Panel - Device Manager - click on the RB entry with yellow - should get box, enabling you to install driver - don't use automatic, use Browse route and input the address C:\ with Drivers details exactly as you find above - install that and hopefully Robert will be your uncle!