lines & routes
I had a hard time finding an example, but the best illustration is the type of route you can create in Google Maps and export to GoogleEarth. ms?ie=UTF8&hl=en&msa=0&ll=38.090256,-79.008179&spn=0.807375,1.234589&z=10&msid=106263049545743586634.000484d8aa876e0771342
I can make a kmz file of them (I wasn't able to attach it) once in GoogleEarth, but the same routes can be described by a set of lat/long coordinates in a database, which is how I thought would be the right way to get lines into ProMaps for Google. But maybe there is a way to get the kmz layer into ProMaps?