Cable & Program
Ron hit it on the head. The combination can cost some. The program comes with the cable and is great for storing GPS data in Garmin format.However, if you do much on the intercoastal or inland, consider picking up Delorme's Street Atlas. I can download data from my Garmin 48 to it, locate my waypoints on it. Or conversely identify a location on the Street Atlas, find the long/lat, and plug that into my gps manually.Works for me.