First of all, JBoss has been tested with tomcat 3.2.1, newer version shall be configured in similar way I think.

Tomcat libs must be in classpath; then edit JBOSS_HOME/conf/default/jboss.conf and un-comment ClassPathExtension mbean for the tomcat lib directory to:

edit JBOSS_HOME/conf/default/jboss.jcml and uncomment the EmbeddedTomcatService mbean. Locate:

Always in jboss.jcml, check that J2eeDeployer is:

  
    Default
    :service=ContainerFactory
    :service=EmbeddedTomcat
  

Add the following lines to TOMCAT_HOME/conf/server.xml

To compile JSP files, add the JDK lib/tools.jar file to the classpath in run.sh/run.bat, or copy tools.jar to the TOMCAT_HOME/lib directory.

Starting JBoss with run.sh/run.bat you should now see the following Tomcat related output in your log messages:

Using configuration "default"
[Info] Java version: 1.3.0_01,Sun Microsystems Inc.
[Info] Java VM: Java HotSpot(TM) Server VM 1.3.0_01,Sun Microsystems Inc.
[Info] System: Linux 2.2.16-22,i386
   ...
[EmbeddedTomcat] Starting
[EmbeddedTomcat] Starting EmbeddedTomcat....
2001-02-20 05:01:23 - ContextManager: Adding context Ctx( /examples )
2001-02-20 05:01:23 - ContextManager: Adding context Ctx( /admin )
[EmbeddedTomcat] Starting tomcat. Check logs/tomcat.log for error messages 
2001-02-20 05:01:23 - ContextManager: Adding context Ctx(  )
2001-02-20 05:01:23 - ContextManager: Adding context Ctx( /test )
2001-02-20 05:01:25 - PoolTcpConnector: Starting HttpConnectionHandler on 8080
2001-02-20 05:01:25 - PoolTcpConnector: Starting Ajp12ConnectionHandler on 8007
[EmbeddedTomcat] OK
[EmbeddedTomcat] Started
   ...
[Default] JBoss PRE-2.1 Started in 0m:14s

That's all. Check the link given at the top for updated/more detailed infos.

Simple, just pull down the specially created jBoss/Tomcat variant.

Look for JBoss_tomcat.zip (8.54M) on thier site.