
http://www.genesis-movement.co.uk/artworkarchive/archivefaq.htm#5

How do I print the pictures?
Once you have downloaded and extracted the pictures, they can be printed by loading them into any art package that reads JPG files, or most modern versions of Word or Powerpoint. It may be necessary to resize some of the pictures before printing. This should be done as follows;
Back Cover = 15.1cm x 11.75cm
Front Cover = 12.1cm x 12.1cm