Just started setting up Tomcat 5 today and wanted to leave some notes on a few things I had to do to get it to work.
I had to change the doctype of my web.xml. This page had an excellent example of what to do.
I added this to enable EL in JSPs
I had to replace my Jakarta Taglibs Standard 1.0 library with the 1.1 version. 1.0 is for Servlet 2.3, 1.1 is for 2.4. I discovered this when the JSP compiler complained about an EL expression in the value attribute of the <c:param> tag.