I thought I already posted this yesterday but I don't see it. The 2nd edition of Jason Hunter's JavaServlet Programming discusses Java Applet-Servlet RMI with callbacks but, unlike the first edition, does not discuss port 80. I wish I had the first edition. Does the Java Applet-Servlet using Netscape (or Mozilla) and Tomcat run on Port 80? Has anyone had experience with using this feature? Where is the documentation on it? Do I look at the sun site, the apache or netscape documentation for a discussion of RMI on port 80?