Ragdoll to Mecanim

I am making a game where you're this dude and you roll down a hill. I thought that it would be cool if the player's default state could be ragdoll, but the player needs to be able to transition from that state to a mecanim state when a GUI button is pressed. What i really need to know is how to transition between these 2 states. I am an absolute beginner and don't know how to code, but i know how to apply the code to the object at least. I am better at using the unity wizard. Any help would be much appreciated. :)