Forget about CATALINA_HOME as it has no real meaning for the embedded Tomcat service.
Put the CMS WAR file in the JBoss deployment directory for your run-time instance. Usually, for the novice you run the default instance, so the deployment directory is usually server/default/deploy for your JBoss distribution.
Refer to http://www.amitysolutions.com.au/documents/JK2-technote.pdf for a configuration guide. You will need an Adobe Acrobat 5.0 compatible reader. The Apache 2.0 instance in RedHat 9 apparently does not have support for shared libraries. You would need to get an Apache 2.0 source version and build from scratch for mod_jk2 to work.
You would need to modify the workers2.properties file to map/forward requests. Refer to the JK2 references to work out your mapping.