cool, thanks i was having trouble because my .3ds is a house with a sort of deck like thing that is just a cube that extends "below" the terrain so that it looks like it's "growing out" of the terrain.... when i 'drop to floor'...it used the bottom of that deck thing as a reference to drop to floor... is there a way to pick all of the elements of my house and make one 'temporary reference point' so that they all drop to floor with that as the point? thanks for your help -michael