Trelawney, thankx for the quick reply and the welcome. I appreciate it. I dont know if I explained it right, but: I want to resize the plants only and populate the eco-system, but leave the trees and rocks the way they are. When I go into eco-system and resize the plants, I render again and the same render comes up as before I resized the plants. I then go back into the eco-system, and resize the plants, but this time I click the Populate Button. When I do that, the trees, rocks, etc etc moves around and changes shape. I want to resize the plants ONLY, and populate the eco-system WITHOUT re-locating the trees and rocks, etc etc. This is what I got. The first picture is the original. Thats the one I want, but with the plants resized DOWN. As U see the trees are quite well placed, but the plants too huge. THANKx