Not sure if this has been covered but thought it was worth mentioning. A buddy came over and we downloaded
www.googleearth.com onto my puter. A FREE satelite imageing program available on the web for public use. one word....INCREDIBLE!!! you can see into your own backyard...or someone elses.... used my GPS to dig up lat/lon waypoints I saved during my hunts and could zoom right into the exact spot! A very usefull tool to look at the terrain in a particular area beforeyou travel to hunt....the image includes altitude,etc... good luck!