I want to make a chain-link fence in my game level. Here's the fence texture, with alpha channel:

(I know it's ugly, but it's good enough for testing)
I made the plane for the fence. I want to UV-map it, but if I load this texture to the UV image editor, and I put it to the plane, Blender don't want to use the alpha channel.
Can somebody explain me how can I do that?
