[Fisneaky]

Regular "bmp" skins go to:-

"#:\Program Files\Ubisoft\IL-2 Sturmovik 1946\PaintSchemes\Skins\ AC name folder"

So your A-20 C skin would go in - "#:\Program Files\Ubisoft\IL-2 Sturmovik 1946\PaintSchemes\Skins\A-20C"


If you're talking about "Default skins Mod" refer to notes or read me for the mod.
(Or come back here and ask)