HaloMods "Classic" Read-only Archive

Hey, I need some help. I have a great hog skin, but DotHalo won't let me apply it. I have the Photoshop Nvidia plugins, and I've saved it in the only two DX1 formats there are. Can somepne clear this up for me?

did u save it as DXT1 1 bit alpha? and is the bitmap on the map internalized?(not the 1 u skinned)