So, thanks a lot guys for trying to help me, I reached the conclusion :idea5: that Midnight Blues suggested before, and I downloaded the entire map + mapsource from [Only registered and activated users can see links. ] (posted by catymag) . I lost 10 minutes to figure out how it works , but finally, using also the indications Midnight Blues and the others posted , I did it.
So thanks a lot for the support and for the post Caty
Now I'm ready to conquer the world :met: with my Garmin :D