Model Editor: Node Manager help

[Squishinator]

I am trying to edit the tornado to make it a fiery looking tornado, but i am having trouble replacing the dust skin in the node manager. I opened up the browse .mpq window, went to textures, and found the dust texture used in the original tornado model. Its one of those skins where there are rows of the image fading in and then fading out (i hope you know what i am saying.) I found one that looked basicly the same in the .mpq browser but its called DustFire or something along those lines. I right clicked on the texture and clicked "use as texture". I went to node manager and found one of the dust textures and replaced it with the fire one. But for some reason, its just squares of them. Its still switching between each square on the image as it should, but its coming up as each square. How do i fix this?

I hope i didnt word this too diffictult for you.