Only Maps Showing after Transferring Waypoints and Routes to the StreetPilot® III

When using the Garmin Data Card Programmer, maps are only capable of being transferred to and used on the StreetPilot® III. You cannot view maps from a Data Card on your computer or transfer maps from a preprogrammed mapping Data Card to your computer. If Routes or Waypoints need to be transferred to the StreetPilot® III, the device must be connected directly to the computer; then using MapSource, transfer the Waypoints and Routes directly to the StreetPilot® III.