ok, there are 2 "dimensions" to silent hill, and James switches between the two. Ur now in the Alternate silent hill which is why the doors are locked which could be opened etc.

Right, if i remember rightly, on the 3rd floor, near to the lift is a door with a 3d releif of a woman on it. You put the two rings on the hand of this door and it will open it!

Hope this helps!!!!