к вопросу об ACETATE слоях
Acetate layers are designed to show a limited number of graphic features such as a northarrow, scalebar, some text, and one or two points, lines, or polygons. The acetate layer is not designed for displaying large numbers of features. If you add many features to an acetate layer, a noticeable degradation in response time and performance is likely. If too many features are added, the service may stop responding.
ArcIMS позволяет управлять собой программно - создание слоя может быть осуществленно на базе MapObject или ArcObjects автоматически - по запросу с WEB, затем такая-же автоматическая публикация карты в IMS.