Now tomcat4 is running, the web.xml of my new application activeuser :
tomcat4\webapps\activeuser\WEB-INF\web.xml is like this :
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
   PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.3.dtd">

<web-app>

       <!-- Listeners -->
       <listener>
               <listener-class>
               com.stardeveloper.web.listener.SessionCounter
               </listener-class>
       </listener>

</web-app>

The catalina Dos Prompt is like this :

Starting service Tomcat-Standalone
Apache Tomcat/4.0.1
PARSE error at line 1 column 1
org.xml.sax.SAXParseException: The markup in the document preceding the root
ele
ment must be well-formed.
Starting service Tomcat-Apache
Apache Tomcat/4.0.1

When I go to the browser and type : http://mil2wwds13:8080/activeuser

I got this :
Apache Tomcat/4.0.1 - HTTP Status 404 - /activeuser

--------------------------------------------------------------------------------

type Status report

message /activeuser

description The requested resource (/activeuser) is not available.

--------------------------------------------------------------------------------

Could you please help,
thanks