Originally Posted by R-dubb
6. Saving the file from Mapsource. After editing the file, it needs to be saved and named in the GPX format. Pick "Save As" from the file menu. Then in "File Type" pick .GPX from the drop down list. I suggest naming the file by starting location. You can also include the length and say loop in the name if you want to. Now your file is ready to attach to an ADVrider post from within the forum region. You must be using Mapsource 6.0 or above to create or open .gpx files. If you don't have this version you should get a free upgrade: Mapsource 6.xx
That's about it. Go out and "Make some Tracks!"
Thanks R-dubb. I was trying to figure out how to get .gpx files to work with my older version of Mapsource and then found point #6. A quick download from http://www.garmin.com/support/download_details.jsp?id=209
and I was in business.