Can anyone help me with a workflow to create Vue Terrains that conform to contour data exported out of Autocad or conversely is there a way to sculpt using an imported object as a reference.

I am an Architect the abilitiy to create accurate terrains is important. I have tried importing DEM data but the scale is to large for a site specific file. I have tried using the Terrain editor but I cannot find anything similar to Sketchup's drape function which would be perfect for what I am looking for.

Any ideas would be welcome

Thanks