Hi PSW.....This is a CAD-style editor for airport facility data. You can create new parking, modify taxiways, add ATC to airports that don't already have it, create new airport facilities from scratch, and other things. It can't change the visual elements of an airport, just the maps and data that AI and ATC use to operate at airports, and the information that appears in you Map View and GPS windows. 735K
http://www.simviation.com/fs2002utilities_ess1.htm go here scroll to bottom of page and you will find it....This is a direct quote from AFCAD not my words...but if you need help i'm sure others here will help you....

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