Steps to configure Tomcat Monitor for JBoss 3.2.5 :

1. Append the following script in the 'web.xml' file, present under 'JBoss_Home\server\deploy\jbossweb-tomcat50.sar\ROOT.war\WEB-INF' folder  :

<servlet-mapping>
<servlet-name>Status Servlet</servlet-name>
<url-pattern>/manager/status</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>Status Servlet</servlet-name>
<url-pattern>/manager/</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>Status Servlet</servlet-name>
<url-pattern>/manager/status/</url-pattern>
</servlet-mapping>

2. Restart the JBoss server. 
3. In AppManager, go to the monitor creation page for Tomcat monitors.
4. Select the version as 5.x and create the monitor. This will create a monitor for the Tomcat web server running in JBoss3.2.5.