Hi Tim, and All, Re: It appears that the WGS84 only adds flattening to the equation to take into account elevation No, changing the Geodetic Datum changes all coordinates, lat long and elevation. Re: But, we didn't have the decimal values at that time :-)... I gave the decimal values to find the site next week end, and in the future. Tim, many thanks for your help. Victor -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.