Gents (I assume)- First off, yes, I've searched. My dilemma- I'm in a bit of Catch 22 here- I can't the only Mapsource I've been able to download from Garmin (I have a Nuvi550 with a Wesatern Canadian Topo Data Card) is the update, which won't allow me to do anything as it does not detect a previous version of Mapsource (didn't receive a disk with my Nuvi). So far I've tried both methods described here, with no success. Any ideas? I'm a relative noob when it comes to loading tracks, although I am reasonably technically saavy.