Hello Jeff, I am not sure how to find this out manually, but what version of gdal is found in latest ms4w 1.1? in the /cgi-bin/ I see that the dll reads gdal12.dll. I just want to make sure that it is 1.2.5 Thanks Chris -- Christopher R. Thorne, GIS Specialist -- Ottawa, ON christhorne at sympatico.ca Tel:(613)523-6593