[Mauzen]

For me it works with the <=

for(new skin = Skins[0], skin_index = 1; skin_index <= sizeof(Skins); skin = Skins[skin_index++])

EDIT: Oops, it does not work, forgot the debug message
This is not as comfortable as yours, but at least works:

for(new skin_index = 1; skin_index < sizeof(Skins); skin_index ++ )
printf("%d", Skins[skin_index]);