The Minimum System Requirements are: 1GHz or faster processor 512 MB RAM 64 MB Video RAM DVD-ROM Drive 5 GB of hard disk space 1280 x 1024 display The Minimum Operating System Requirements are: Microsoft® Windows® XP Professional, Microsoft Windows 2000 Professional Apple® Mac® OS X 10.2 This DVD-ROM also requires the Quicktime Movie Player (Version 5.0.5 or higher), and Acrobat Reader (Version 5.0 or higher) in order to view its contents. The web links for these installers are below. If you don't have these items on your computer, please install these items before you launch the DVD-ROM Gnomon Workshop movie. Apple Quicktime Link: http://www.apple.com/quicktime/download/ Adobe Acrobat Installer Link: http://www.adobe.com/products/acrobat/readstep2.html