copy "current" folder to "tools" folder, and remane to "default".
after that. replace what you want. (same size recommended)
open the config.txt that come with xskimaker, than create a name for the skin.
save, than drag n' drop config.txt on xskinmaker icon. it should create a skin file.
copy the file to xwd skins folder. than select it.
hope it help. sorry my english btw.