I usually don't do this, but you can take a look at our software (www.memory-map.com). If you buy the Navigator license (allows third party map import), you can download all the maps you want from the USGS Seamless site (includes aerial images), the Libre Map Project or many other sites. State elevation data can be downloaded freefrom our server and used for 3D map images. You can also import / export routes, tracks and waypoints from most GPS models. The license allows use on one PC, one laptop and one mobile device (Pocket PC or Smartphone).