To install the RELM RNDIS driver for the Windows 7 64-bit platform, do the following:

1. With the radio turned on and plugged in open the Device Manager

   Start | Control Panel | Hardware and Sound | Device Manager

2. Under Other Devices right click RNDIS/Ethernet Gadget
3. Choose Update Driver Software
4. Select "Browse my computer for driver software"
5. Point to a folder that has the file RNDIS.Ethernet.x64.inf
6. Proceed as if installing on 32-bit platforms