Hi again, Jinx, Martin's right. I brought in a tree from Poser (the tree and the leaves are separate meshes), and it was fine, but when I just imported the objs (tree and then leaves), you have to add the trans maps. Click on transparency, set global transparency to 100%, then tick the little box that says variable transparency. When the function appears at the right (usually a sphere), right click and open the transparency editor. Add the right trans map for the leaf you want to use. I had to reverse the trans map (click on the little tiny black and white square). Just one more thing; as I mentioned, the leaves are separate from the tree, so before you move anything, you might want to group the tree and leaves so the trunk doesn't take off without the leaves, lol!

Sgiathalaich