I am wanting to use GE on a laptop in a vehicle, feeding IP service via a celluar modem (aircard). All that is currently set up and ready. What I need to know is if anyone knows how to use a simple GPS receiver device, i.e. the Garmin Earthmate, or the similar device from Microsoft. GE's realtime GPS setting seems designed for a full handheld GPS unit and not just the antenna device. Help, anyone?