Hi Steve, The URL I am using is as follows (I have split it up for easier reading)
http://ldnpc01/scripts/mapserv.exe?mode=NQUERYMAP&; map=C:/Inetpub/wwwroot/mapfiles/uk.map& mapext=304365+392165+309842+386688& mapsize=200+200& qlayer=Addresses& layers=Roads+Addresses& imgext=305186+388824+309787+386058& map_web_empty=http://ldnpc01/scripts/mapserv.exe? mapext=304365+392165+309842+386688& mapsize=200+200&layers=Roads+Addresses& map_mode=MAP& map=C:/Inetpub/wwwroot/mapfiles/uk.map The idea was that if the result cam back as empty the "map_web_empty" would return a normal image, instead of the message. I think it was getting confused with the same parameters appearing. (I now have a work around where I have an HTTP handler, which checks if the contentType result is "text/html", then call the mode=map url instead of nquerymap, but this still seems an unnecessary step) Incidentally the imgext parameter doesn't seem to work, is the only option to use the imgbox parameter with pixels?
