If you only have .img files from your maps and don't have the aditional files needed to integrate it into Mapsource you have two possibilities to deal with that. Either you use GPSMapEdit to look at the maps, and then upload them to your GPS device using e.g. Img2GPS, or you integrate the maps into Mapsource manually.
Again you have two possibilities: Either you do that all manually, but that's quite complicated (check the manual here), or you use the MapSetToolkit. To do that (either manually or with the MapSetToolkit) you will to need install the cGPSmapper.
Now you just open the MapSetToolkit and select the .img file(s) which you would like to have integrated into Mapsource. Then you move them to the right field by klicking "ADD"
In the "Mapset Directory" field you will have to browse for the folder in which your .img file is located. He needs that to write the new files which he will create to that folder as well.
In the "mapset name" field you just think of some name you want the map to have, that's also the name which will then showup in Mapsource.
"Family ID" is an ID every map needs to have. So you will also have to fill in that field. Just make sure it's an ID that's not already taken (check the box in the right, where your installed maps with the IDs are listed).
The field at the very bottom where it says cgpsmapper you have to browse for the location where you have the cgpsmapper.exe installed.
Now you only have to select the checkbox "Install in MapSource" and it should start.
The window of the cgpsmapper will open and write some stuff, and at the end it should say "Convert terminated". Now check in Mapsource and you should find your map in the dropdown list together with your other maps.
Copyright 2008-2011 - Maps 'n Trails
Maps 'n Trails is a subsidiary of Calidri Cartography & Consulting