Sorry this is a late addition to the thread. However, we run Exegesis and have implemented a two-way DDE link to ArcView over our Network which runs reasonably well. I suspect the problems we have experienced - slowness and occasional failure to connect the two programs - owe more to our network than anything else. When the two programs run side to side on a stand-alone PC there are no problems at all. When we get a new server installed for the network I hope the difficulties will disappear. My main concern over the link is that Exegesis don't seem to have any plans to develop it further until ArcView 4 comes along, Paul Gilman Essex County Council %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%