Geostrider, I started downloading maps at the 64 meters (farthest out in space) view and selected to download map data fill entire screen, I stared with my house as the center of the screen and worked my way out in a spiral until I had the entire state of Utah on my drive (took about a week to do and over 1 gig of space on my drive). I then did the same thing with the lower res 8 meters (closer to earth serface view). For the 8 meter res photos, I did just the cities and other specific areas, not the whole state.
I never specified any real boundries. I just had a paper map at my desk also that I referred to when looking at the arial photos. I could recognize major interstates, I-15, and I-80, as well as well known lakes such at the Great Salt Lake and Utah Lake, Yuba Res, Lake Powell, etc. I was able to approximate the state lines from what I compared to the paper map and the landmarks I saw on the arial photo downloads.
I did this all on my desktop and then following the instructions in the advanced.txt readme file in the usaphoto folder on my drive, copied the mapfiles to a CD (well only partial since it didn't all fit on the CD), I put that CD into my loptop and read the maps directly from the cd. Worked like a charm today while caching. Drove right to the cache (within about 50 feet).
Now I don't have to waste all my printer ink. But now my GPS is constantly turned on when we are driving to our goal, but AA batteries are much cheaper than ink cartridges.