Hello again, I have finally got around writing some documentation to go along with the extension. I STRONGLY RECOMMEND READING THE TWO USER GUIDES BEFORE USING THE SOFTWARE. The extension can be downloaded from the ESRI's ArcScripts section at the following address: http://arcscripts.esri.com/details.asp?dbid=13717 I must advise you that only a demo version and not designed to produce flying outputs. So you will have to be patient but I do hope that it finds some use to you :) Sanjay.