Help me please

Heres the deal. I want to make a map with custom skins and models. But i dont nkow how to customly make skins and models. If somone would be kind enough to explain it to me or show me a site that would explain it to me, then please post. You can also make fun of me here because of my noobish question... :(

call me crazy but you might wanna start there.

or try reading the forums a bit, you know, read the topics like how to import mdx to max and such...

Goongoon, you're the most crazy, mad, insane... oh wait. No, that sound's reasonable...