National Geographic: Secret Yellowstone DVD Classic Nat Geo program See Yellowstone like never before Elegant video crisp and clear video images that will astound and amaze you DVD Special Features: Yellowstone National Park Explorer 3D Interactive and Printable Map - Minimum System Requirements for Interactive Map Windows 95, 98, NT, 2000, ME, XP, Vista 486DX/66 MHz PC or higher 64 MB RAM 8 MB video memory Macintosh OS 10.2 or higher 350 MHz G3 or better 128 MB RAM 16 MB video memory Windows 95, 98, NT, 2000, ME, XP, Vista 486DX/66 MHz PC or higher 64 MB RAM 8 MB video memory