How do you beat the natures of the beast quest on dragon age origins

From the begining you have to explore the forest until you find the tree that speaks in rhymes, he tells you that a hermit stole his acorn. Get it from him by trading something he wants. The old tree will will give you something based on what class you are. The armor/weapon will let you go through the barrier that the wolves set and form there you basically just have to explore the ruins until you get to the main room and from there its obvious.