Ok intelligent inmates ....question for the geekiest of the geeks... I have a Garmin 60CSx on which I have loaded and successfully used .gpx files as routes. I have Delormes Topo North America program on my laptop that I can create routes on however they are .tpx files. Does anyone know if the Garmin I have will load and run a .tpx file??? I know the first response is why don't you just try to load it and see...but the simple answer to that is that my son currently has the GPS and he is located four hours away, or I would have done that. I figure there are likely a few intelligent individuals out there that could tell me right off the top of their heads. Any ideas?