The default skins are easy to find out (0-311 except 74), for the custom Skins you can either parse the artconfig.txt yourself or do it manually (I suggest doing it automatically).
Quote:
Originally Posted by v1k1nG
What can I say. It 100% checks if the skin is < 0, > 299 or == 74.
EDIT: didnt read this was 0.3DL thread.
Skin IDs range from 0 to 311 (except 74 like you said).