The Diecasting Development Council (DDC), Rosemont, Ill., has made available two CD-ROMs. The first, Product Design for Die Casting OEM Design Seminar, allows the user to walk through the actual lecture right on their desktops. It features a self-paced presentation with audio and automations on the proper design of die casting. The second, Production of High Precision Zinc Die Castings, reviews the important aspects of creating a quality zinc die casting design. Developed in cooperation with the International Lead Zinc Research Organization, the CD delves into designing for high tolerance components, identifying defect causes and cures and information on prototyping relevant to zinc die casting.