OK you guys have me hooked! I've gotta have this... I have a Garmin 12 gps that is my primary source of navigation. What would I need to get started? Start with the laptop... I read I need a usb port, but what about ram, and processor speed? how much hard drive used? What would you get if you were starting over? also, why go this route over one of those fixed mounted gps mapping units? I have tons more questions, but I dont want to burn anyone out here!

Its like fishing star trek style!