GIS CAD Interoperability - Don Kuehne's GIS/CAD blog: "In this continuing series of posts I will document the steps I go though when creating a custom GIS and CAD translation or interoperability tool. One of the key benefits of GIS and CAD translation and interoperability performed in ArcGIS, is the foundational technology provided in the ArcGIS geoprocessing environment. ArcGIS geoprocessing technology provides many useful system tools that allow you to build customs tools that you can in turn use to build more tools in the same way."