Thanks Bob for the information.
I too am sure Google Maps will be around for a long time.
It's ZeeMaps that I worry about, that's the company where the map is generated and resides on their server. They then send the data to google to generate the map. With the amount of time I had I really didn't have the time to read up on the KML file structure.
I realize using Google Maps & KML files are the best way to do it, the next time I get some time and some data to create more maps I'll be using Google Maps directly...