How do you change the power steering belt on a 1994 Nissan Sentra?

I own a 1994 Nissan Sentra, it has 1 belt, a serpintene type that turns all applicable ingine componants including the power steering. There is a spring loaded pully with a smooth face, there is a bolt in the center of the pully. Turn the bolt clockwise to aloow the belt to be taken off and replaced.