Hello All. In case you haven't see Reallusions I-clone I am bringing it up here. There is a free version you can download and try it out to see if you like it. If you want to import your envisioneer models you will need to buy the pro version $199.00 and the 3D exchange converter $69.00. They run specials regularly so you might get a package deal that is even better. http://www.reallusion.com/iclone/3dx.asp
Here are some screen shots of a model I did in envisioneer including the terrain.
Note: They have great moving water and trees.
p.s. I cant post pictures right now. I don't see the attachment button. It seems to be hiding.