Stupid question perhaps, but how do I get assets like trees and vegetation that are compatible with Terragen? Where do I get content?! I have a number of files from XFrog for example but they are not in the .tgo format. And I can't seem to find a way to export them from some other package in the right format. I'm following a tutorial where a file Pop Pine01.tgo is loaded...so, where did that come from. I'm coming over from VUE so all this is very new and mysterious to me. Thanks for your help.