I was testing out a simple application and I've found I can't get PNG files to display in Netscape. The test worked fine in IE, but in Netscape I get an empty picture. If I right-click on the empty icon then I get a "save-as" dialog box. Any ideas on why PNG files aren't displaying? I'm using: PWS server on NT Netscape 4.79 php 4.2.2 Mapserver 3.6.1 Thanks, st