National Geographic's TOPO! State Series Software has five levels of detailed maps, including authentic USGS 1:24000, 1:100000, and 1:500000 scale topographic maps, plus two National Geographic atlas map levels that are ideal for finding cities and major travel routes. This software comes with tools that make it easy to create and customize maps. Add your own symbols, notes, trails and other information. Print high-resolution maps on any printer. Manage your waypoints, routes and tracks with built in GPS support for many popular handheld receivers. Magellan Triton series owners can use this software to transfer detailed maps to their GPS receiver. Compatible with both Mac and PC operating systems.Computer system requirements: Windows 95, 98, NT, ME, 2000, XP or Vista. 133mhz PC or higher. 64MB RAM + 8MB video Memory or Macintosh OS 10.2 or higher. 350mhz G3 or better. 128 MB RAM + 16MB of video memory. Available: Colorado, Idaho, Utah, Montana, Wyoming, Arizona, Minnesota and Iowa, Nevada, New England, Pennsylvania and New Jersey, Washington.