I have never used Python, nor do I know anything about programming but I think it is necessary to accomplish this task. I have a feature class of parcels, which have attributes of area and elevation among other things. I want to dissolve adjacent parcels which either have the same elevation or a lower elevation, up to a maximum dissolved parcel size of 250-acres. I am using ArcGIS 9.2 and have access to most all extensions if that matters. Anybody have suggestions?