thanks to all who have responded to me and answered my question. my original query was about basics of avenue programming among the replies many suggested I)the folowing books 1.ArcView GIS/Avenue Developer's Guide by Amir H Razavi 2.ArcView GIS /Avenue Programmer's Reference by Amir H Razavi and Velerie Warwick (includes about 100 sample scripts). II)folder in the installed version of arcview assumung c: as default drive C:\ESRI\AV_GIS30\ARCVIEW\Samples\scripts and III) following sites http://www.esri.com/training/index.html http://gis.esri.com/arcscripts/scripts.cfm http://www.gator.net/~garyg/aveSrcFrm.htm http://www.gator.net/~garyg/aveclass.htm special thanks to Richard Krell for providing the scripts. thank you sreenath _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.