I recently bought a Nuvi which came with a free US map download and some free software called RoadTrip. Honestly, it's pretty cool. However, I can't figure out how to get it to show my current position as delivered by my NEMA GPS (Nuvi won't output position but the BU-353 will). Am I just being useless at computers, or is the RoadTrip software not supposed to be able to do this?