After pairing the device, create a COM port for it by clicking on the "COM ports" tab in the 6800's Bluetooth Settings and then clicking "new outgoing port" and pick the COM port number you want to assign it to (I chose COM4). Then go into the google map settings and tell it to look for the GPS on COM4. That's it. You don't need to change anything in the Windows Mobile "External GPS" program. In case you did change those settings, the "GPS Program Port" should be set to "(None)" and the same for the GPS Hardware Port. You should also have a checkmark next to "Manage GPS automatically".

BTW, I moved your post from the FKG 2000 thread to this one since the thread you posted in is for the 2000 and this one is for the original FKG.