I am stuck. I don't have any program that will convert my animated gif to a png. Gimp won't do it. One program I tried ran all night and simply created individual png files for each frame. I tried loading the gif into SkinStudio's nwa creator and it appears to load but when I test the animation it shows nothing in the preview. By the way, the standalone nwa creator is in the DeskScapes3 folder.
Edit: I had assumed the standalone nwa creator was simply the program run by the Tools menu in SkinStudio, but it is not. The standalone version will work with the multiple individual png files. I just created a nwa file with it but when I loaded it into the SkinStudio nwa creator for a preview, all the frames were black.