For the one or two of you that might be interested, the simple WMS client reported earlier now supports rudimentary feature query. For example, go to http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?JavaScriptMapServer and CTRL+SHIFT+CLICK on a country (in the map on top) to retrieve some basic unformatted text in a pop-up window. Cheers, Dave V.