Read the first post in Skins section...
There you can find my skin editor BSP SkinMaker (link in my signature).
You can (should) also read BSPeter's Help2Help post (link in my signature) section (7)!
BSP SkinMaker (v1.07) the one and only Skin Editor for BSplayer
BSP Definitions Manager (v1.02)
BS.Player's FAQ (by BSPeter) | Italian language file (v2.57 build 1051)