halfahippy

Hi i have a x type 2.2d estate was driving today turned a corner heard a slight noise then power steering went looked under bonnet could see oil mess at the front of the engine radiator area i managed to drive home about 4 miles with no problems or noise but no power steering. Please can any one tell me is this likely to be the pump or a pipe or something else ect and is it a easy fix or a major repair? many thanks - Darren