World Model Character Pose?

[Polishhotdog]

I'm attempting to make a fist model for Garry's Mod, the first person model has been finished and is working but the problem is the world model. I want the character to be holding out his arms in a "ready to fight" stance. How would I go about doing this bone wise? Do I need to export one of the humans and make it the world model? Or simply use the bones alone.