Deb,
If you have a notebook computer the best, easiest and most useful method is
to obtain a Delorme Earthmate GPS that operates from the USB of the notebook.
It is very small and interacts with the very good Delorme computer map of the
US. I have used this arrangement in the US plus (using scanned maps) in Central
America. You can find it at Delorme's web site.
To subscribe, change options, or unsubscribe please see the instructions at
http://listlva.lib.va.us/archives/va-roots.html