[jboss-user] mod_jk on old version of jboss (2.4.6)

Hi, I have a customer running a webapp on old version of jboss: 2.4.6. They want to run multiple instances and use mod_jk to perform load balancing. I've tried to set this up using a current mod_jk (1.2.26) and apache 2, but find that this jboss/tomcat version does not honor the "jvmRoute" attribute in the server.xml. Specifically, the JSESSIONID cookies lacks the ".tomcat1" or ".tomcat2" suffix appended to the tomcat-generated session id. The "sticky load balancer" fails and Tomcat assigns a new session to each request. I've dug up the 2.4.6 documentation and see the example mod_jk configuraton--it doesn't mention anything of the 'jvmRoute' parameter. Does anyone recall how to configure mod_jk with jboss2?. Did mod_jk change? Would I need an old apache 1.3? Finally, I tried downloading the source code, but source forge only has the compiled files. Any recommendations for digging up the source code? thanks, bill