You can go to Avery Design & Print Online at
www.Avery.com/print. Just enter in your product number and it will bring up all of the available templates for that product. Then at the top of the page you will be able to see buttons for 'Front of Card' and 'Back of Card. So you will be able to design the front and back. If you are unfamiliar with this online software, here is a link to the demo:
http://www.avery.com/avery/en_us/De....