I would like to try machine quilting on my Pfaff Creative. The book I'm reading on machine quilting says to use a walking foot -- I looked in my Pfaff manual, and saw nothing about a walking foot. I called a local Pfaff dealer, and the person told me that I should have one "built in" to my machine. I don't know what this means. Does it mean I can just go ahead and quilt with the regular presser foot? I don't have to do anything different? Any advice appreciated.