the best way forward will be to use the UTM system, so we can go into Europe without too much difficultly. Your new GPS will be able to handle all these different sytems
I promised McGrail a conversion program - I found a way of doing it through the Airphoto application
http://www.uni-koeln.de/~al001/airphoto.html
but had some problems with calling the particular data structures from Visual Basic, found that Delphi would be OK, but that the Delphi CD had gone missing, and my infamously short attention span moved on ... this is a nice website - http://www.slough4peace.net/ - and a rather good excuse ...
RG