This is great stuff! Looks like you've used Fractal Terrains Pro (or Wilbur?) for the terrain. I'd like to see more of this happening- so I think it's really useful to see the kml template available. ME-DEM have a guy, Seer, who handles this side of things (georeffing, GE, WorldWind, etc).

http://bullsworld2007.wordpress.com/...-wind-terrain/

http://wwterraintiling.spaces.live.com/

I think the two most difficult things to overcome for people is the georeffing and the terrain building. Well the second is not essential of course- and in any case, if you're using Google Earth, it doesn;t support user terrain, but World Wind does. That's why we favour that platform at the moment.

monks