It's not a problem. You can just select the alpha plane, go to the material editor, right click the texture map and Edit Function. Select the icon with the (probably white) globe in the function editor connected to the Diffuse output, use the little arrow to load a map, and pick your AVI. The same with the other globe, connected to transparency. That's all.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

My gallery   My freestuff