u need to fiddle with the materials editor. u also need to select the correct mesh to edit leaves or trunk. the probhlem is mostly with the leaves and transparency. the materials should be there. they just need to be tweeked. agent smith did a better job with his example than i did with mine when i fooled with it. so u should probably check with him. i know it seemed like when i worked with .trd files the foliage on my trees seemed fuller.

Computer Art by Charles McChesney