I have been using this trick for several months on my Nuvi 660and loved. I have found that if I rename the gpx file before putting it thru the POI Loader, the data bas show up with the File name. I've used name like "Florida 2008.gpx"
I also like the fact that, at least on the Nuvi, you can spell any part of the Waypoint to search. Also the Name, terrain, difficulty and cache hider show up.
One thing I have not done is to get rid of the database name after I delete that database. For example, I'll mount the Nuvi to my computer. Then using Explorer, I delete the Florida 2008.gpi file. However the database name Florida 2008 still shows after I do where to>extras>POI.
Is there a way to delete this database name?