GPS is designed to be a standalone navigation system. It's not designed as a web-based driving direction system. The earth is a sphere, more or less, and GPS (the G does stand for GLOBAL) is designed to show a location anywhere on the earth - land, sea, or in the air. There are no addresses in the middle of the ocean, or the desert, or the arctic. Driving directions have nothing to do with GPS, but there are software packages that use GPS or a web app to generate them. WGS84 is the standard model for location, using latitude and longitude, the same system used for centuries. If you can't handle latitude and longitude, then I'm sorry, you'll have to come up with something on your own. It's just not that hard to understand lat/lon. If you want a standard method, try this geocoding site. They came up with a universal address system long ago, but virtually nobody uses it. Maybe it will work for you.