I have mapsource also....I can double click the saved waypoint and change the name and other fields. My software defaults to gdb extensions. I am thinking you can save the waypoint file under any name to your hard drive. Then just email this file to your friend. Once he opens his Mapsource file...he should be able to import that file to his Mapsource by going to file...open and then to the location of his saved file. I have never tried it, but see no reason it should not work this way.