Terrain,
DBC only recognizes
.x objects. Therefore, unless T.ED enables you to export a model to the Direct X(.x) format, you might be out of luck. However, not knowing the name of the program now because it has been so long ago, look on the internet for a 3d model converter. I downloaded one some time ago, though I do not have it anymore, and it carried an extensive list of model formats that it would convert to and from. The best part...it was free.
Anyhow, if you are able to get a .x of your terrain model, then just use the DBC command
LOAD OBJECT Filepath$,ObjectNum to load the model into DBC. If you are able to make it this far, if you have the version of DBC able to use DLLs, then I would look into some collision DLLs in order to enable the camera to tread over the terrain.
Good luck!
>-Formerly known as NanoBrain-<