Hi CBayWolf - The waypoint #GC5125 is an arbitrary number generated by GEOCACHING.COM, and, used for indexing. To input info just enter the coordinates (N39 17.868 W076 36.922) into your MAPSOURCE software program's "Edit / WayPoint" function and then U/L to your GPS. From that point, just jump into the car 'asking' your Rino to "GOTO" the selected WayPoint. Easy, huh? Take care.