Hi Clive,
Go to Devices and Printers and under Unspecified you should see your Radarabox. Double click it to open it up and you should see a General and Hardware tab. Click on hardware and you will see a Properties button bottom right.
Click on it and it will open up with 4 tabs one of which is Driver, click on it and you will see a Change Setting button bottom left, click it and then Update Driver. You will then be given 2 choices, go for Browse My Computer for Driver Software and lead it to where you have extracted the 64bit drivers to previously. Once you have done this all should hopefully be well
Alan