I have put together all the info that I came trogh hours of google serach to add IMG maps to my garming: EASY WAY: 1) How to put img maps on to a garmin "x"(with externel memory card, or sd) Create a folder on the card with the name "Garmin", inside you can copy the Image file (.img) you now change the name , if needed, to "gmapsupp.img" and thats it! Not so easy: 2)As it should be done Download the Mapsource file on your PC Run the exe file (Make sure the data end up in the Garmin map, usually not the one which is the default) open Mapsource select the map (there should now be a map called OSM routable) zoom out to you have the full map on your screen with the knob map (Select map) select all tiles connect your Etrex upload the maps to the etrex The last one, and the best : Using the process in the previous post, I downloaded some street data for London, and converted it to a Garmin .img file. I then used the following steps to add the .img file to MapSource: 1. Created a subdirectory in my C:\Garmin directory called London, and copied my 63240001.img file there. Note: MapSet Toolkit will only recognize .img files with a numerical filename. If you rename the file with a non-numerical name, it wont show up. 2. In Mapset Toolkit, chose that file with Select IMG files. 3. Highlighted that file, and Added it to the selected IMG files. You can add multiple .img files as part of a single set of files. 4.Chose the same directory that contained the .img file as the Mapset directory to be used 5. Assigned a name to the mapset, London 6. Chose a 4-digit Product Code number (8765″ in this example); the only limitation is that it not conflict with any other product codes (which are displayed in the Uninstall Mapset box at the right). 7. You can enter Copyright info if appropriate, but its not required here 8. At lower left, chose the directory where cgpsmapper.exe is located (usually the C:\Program Files\cGPSmapper directory), and selected the cgpsmapper.exe file 9. The Convert (Product>Families) section was left blank; more information about Family ID and TYP files is available in the cgpsmapper manual. 10. Checked the box marked Install in MapSource. Checking Blank overview maps will eliminate the map preview in MapSource. Ive found that for some mapsets, leaving this box unchecked will result in a crash of cgpsmapper, and a failure of the installation; in that case, check the box and try again. 11. Clicked Start, and shortly thereafter got a message box saying Convert termined (sic). 12. In the Uninstall Mapset section, theres now a new listing for the added map. Sources: Google and firefox Software/freeware/shareware/etc... Google and firefox MAPSETTOOLKIT: cypherman1 - MapSetToolKit page (font-end for cgpsmapper) GPSMAPPER cGPSmapper - Your Tool For Creating Maps INFO/howto: Google and firefox OpenStreetMap Forum / Auf Garmin etrex Legend Hcx Karten laden, andere Forenlösungen schei Beginners' guide - OpenStreetMap Adding Garmin .img Map Files To MapSource Enviando mapas personalizados a un Garmin GPS (i did not understand this but i came trhough it and mayby it is interesting for some of you) MAPSOURCES: Google and firefox Search free Garmin maps by location (I used this and worked) Worldwide routable Garmin maps from OpenStreetMap