This seems like the place to come for some answers. Since I know very little about this, I will start by explaining what I'm trying to accomplish, and hopefully someone can steer me in the right direction. Ideally, I would like to be able to use google earth images and track my location in real time on those images. Yes, I know, that's easy. Here's the catch: I need to be able to do this where there is no cell service, and no internet connection. I'm not opposed to spending some money on this, I'm not looking for a cheap way. The closest I've come is the Garmin 750 Montana, which I would go ahead and buy if only it had a bigger screen, or a way to plug into a larger monitor. My intent is to mount this semi-permanently in a vehicle, and use an external GPS antenna, which also isn't supported by the Montana, although it seems it is quite capable without one. I would like a 7 inch screen minimum, and would prefer a 10", hopefully visible during the daylight. It seems Lowrance offers a device on which I can do this, but I would have to buy maps from Rugged Routes at 0 for each 400 sq. mile grid. The Lowrance runs between 00-2000. Problems there are I'm paying for a lot of hardware in the lowrance I don't need, and if the guy doing the maps quits doing them, I can't get any new areas. \n\nThe only other option I see is to buy a tablet that will accept an external antenna, download a bunch of satellite images on it, and then use software such as Valery Hronusov's app called [URL='http://blog.geoblogspot.com/2008/09/navigator-101.html']Navigator [/URL]to track me on the images. Problem with that is I don't think the app will work on saved maps, I think they need to be google earth images with full functionality. \n\nI've already resigned myself to the fact that I probably won't be able to use Google Earth for this. I currently use an app called OnX offroad, which has pretty good images. I also know of Bird's Eye images, I may end up using those. \n\nAny suggestions, advice, ridicule or comments would be appreciated. The more knowledge I can throw at this problem, the more likely I am to come up with a solution. Thanks in advance!