Hi Raymo,
Disconnect the USB lead from the USB port then clean registry out and then plug the lead back in and make sure you have a internet connection and it should download the driver and install it .or
If you have tried it all and the cables you got from a scope shop take them and the hand controller to the shop and ask him to do it for you with the cables you got from them.
http://www.bisque.com/sc/forums/p/446/430.aspx#430