Can you please tell me how to properly put the required files on an sd card? Do I create a folder on the SD card and call it Garmin or do I create individual subdirectories within the Garmin directory for each of the jcv files, asr files, img files, .db files? Or do I put everything in the root directory or create a system directory like on the unit itself? I am confused and would really appreciate any clarification. I have a Garmin 3790T. Thanks!