I have two laptops loaded with GRLevel3, MS Streets & Trips, Spotter Network (geo2) and XPort. I have a data card from Verizon, a cellular amp from Gordon at Maximum Signal, a mobile laptop mount, a 400W power inverter, GPS (MS S&T), and a Canon HV20 HD camcorder with suction cup dashmount. My Sony VAIO laptop has a 4-pin Firewire connection as does my HV20.

George Grant