I know there is a thread about this already, but the search function won't work for me. i downloaded the MP jango skin, and i want to use it in SP how would i do that?

Well, I think the easiest way would be to simply add it into the .npcs file and use the "playermodel" command. If you want it to be fully replaced, you must set the game's default player model to the Jango model. I am not sure how to do this as I have not tried to mod the game much yet, but more info as I get it.

In the JA Skinning Forum loacted below this forum, you'll find a guide on how to add new models. :)