Scenery Shaders

I'm working on a project and i'm having a huge problem with tree shaders. For one of my maps i exported a pine tree from halo 1 and it looks like butt. When i exported it one of the bitmaps that exported with it was an outline of the tree and a dark one also. I'm just wondering what shader template to use those bitmaps in and what section in the shader they should go. Please help me and correct me if i'm going about it the wrong way.

Edit, its called a treecard. I basicly want to know how to integrate a treecard into a shader or how to use it.

if you want to use a tree that's not a standard scenery file in h2v, youll have to weld it into your bsp, and use apropriate shaders.

Well i used the trees as instanced geometery and i have no problems with that, i just want to know if i'm able to use that treecard bitmap.