It has something to do with the way Sketchup builds an object, I think. Maybe Im not understanding it correctly myself - heres how a fellow Sketchup user explained it to me: Smoothing SU meshes is prevented in other 3D apps by the fact that SU outputs single faces. If 4 faces share a point then SU will export 4 points on top of each others instead of only one point. Most 3D apps can't smooth this because they see it as 4 separate faces instead of parts of the same mesh. The solution is to remove all those redundant points. I don't know if Vue can do this for you, but many programs can. trueSpace can not. I'm often using Deep Exploration to "join equal 3D points". Does that make it any clearer? Seeing that TrueSpace isnt able to deal with this problem, I doubt Vue Pro is. By the way: you are really QUICK Gebe!! Thanks!