plane/transparent tree

I have looked around, and found two tutorials (both not good). Does anybody know how to do this? I have created the foliage with a transparent background on Photoshop, and export it as a PNG. Can anybody give me directions on how to make the tree (with the planes that intersect)?
Thanks! This is going to be used for a game and MUST be low poly.

Best to ask this in the GE forums. The modeling forum is for advice on how to model a tree, you know, like the trunk and branches. Your question is how to orient and texture two or more planes for the game engine.I think you just put a plane with the texture mapped using the alpha of the image. Then duplicate the plane in top view and rotate the duplicate 90 degrees.