DNR Garmin is an easy-to-use software application designed to manage, manipulate, and save GPS information for use in GIS programs. DNR Garmin is commonly used to transfer GPS data between GPS units and computers. The GPS unit is connected to the computer with a cable.
DNR Garmin is designed specifically for Garmin GPS units. This guide is written using the Garmin Legend GPS receiver. All other Garmin GPS receivers follow the same protocols.
The full article can be found at: DNR Garmin Extension User Guide.