I did check out MacGPSPro, and it will work with my unit, but Garmin's map software, MapSource, is proprietary, and will not work with MacGPSPro. Thanks for the idea, anyway.
Trying to get VPC to recognize a Garmin Etrex Vista C GPS, which has (only) a USB cable. (An older Garmin GPS works fine with a serial connection.) I have a G4 desktop, with OS 10.3.9 and VPC v.6.1 Plenty of RAM and hard drive space. When I open a MapSource map (Garmin) and try to load, it...