I use mapsource ... with several maps in it.
I have genuine garmin maps installed in it, one for Europe, one for Australia and one World map. And I have two .nl maps of Australia - one old style the other new style. Then I have .nl maps for Vietnam, India. And then I have maps for Australian mountain biking, Australian road bicycling. And some other maps too! So you can have a great many maps avalible in mapsource, but you can only view one at a time.
If you do a .nl 'custom map' then you are restricted to one of their 'custom maps'. And if you try install another .nl map that is an update of one already installed it will ask if you want to overwrite the old one, you cannot have both old and new (unless you want to start getting very complex!). I do prefer the country maps - there is some overlap with other countries so it is not too hard to handle changing countries.
File extents ... roughly
.exe files are mean for a pc. In an OSM/Garmin context they install an OSM map on the PC for use in Mapsource/Basecamp.
.imj files in an OSM/Garmin context are for use in a GPS.
If you want more instructions ... read the very first post in this thread.
Link http://www.horizonsunlimited.com/hub...eet-maps-64135
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