1. Open the file with Winzip.
2. Extract the files to the Winamp folder and group them into one folder (e.g. C:/Program Files/Winamp/emoon)
3. Open Winamp. Click on the upper-left corner. Move the mouse to "Options," then "Skins," and then "emoon."
4. You will see the Eternal Sailor Moon images.

It should look like this: