Also I have a follow up question regarding quality.

I've rendered the image bellow with the best quality, made everything max, I doubled the trees polygons like 5 times, the terrain is 1024x768, but everything looks so grainy. After looking at the small preview on the right of Vue I thought that that grass will come out mushy and the tree will look picture perfect, but neither of them realy look great, not even good. Can someone give me some pointers on how to do that? I saw a few Vue made trees and grass fields and they look reaaaally spectatuclar, I was wondering how to acomplish that?