Create Garmin Custom Maps with Global Mapper and TerraIncognita
Upload your own Google Earth maps to the Garmin
Colorado, Oregon, Dakota, and GPSmap 62&78 hand-held units.

This review is based on using the GPSmap 78sc  ° 25 Oct. 2010
For specific questions about this product, log onto the FORUM

In order to upload the highest-resolution Google Earth photos quickly and perfectly registered, one must use Global Mapper (about $300).  Global Mapper, among its many features, has the ability to import georeferenced Google Earth .jpg photos registered as Ozi Exolorer .map files and export them as a .kmz map file containing 100 or less tiles (a requirement for Garmin's Custom Maps).

Exporting the data files as .kmz files to the Garmin unit is easy as 1,2,3.

Click on these thumbnails for larger views

Now don't get lost out there -youall!
jack yeazel