Essentially,what I was trying to achieve was to have the memory map view on the 60csx and navigate accordingly.In my car,for example,the map is read from the dvd and the display quite accurately represents where you are.It seems from your replies that this may be possible if I buy the SD card for area I wish to visit?If this is the case then it would probably be garmin specific and would I be correct in assuming that it would be a Mapsource product?