Go to expertgps.com, you can D/L it free for 30 days. I paid for the subscription and would be willing to give you the code after 30 days if it is waht you are looking for. I take my Garmin GPS out into the woods, walk, scout and mark waypoints. I go home, plug my GPS into the computer and it D/Lthe bread crumb trail that I walked and all waypoints that I have marked. I can alos look at the aerial photo and mark points and it will give the me coords to then type into my GPS to take out into the field. You can overlay topo and aerial photos with one click. Check it out and let me know.