STARTING MULTIPLE INSTANCES OF TOMCAT

[harish A.S.]

hi,
  i have installed four instances of tomcat apart from the original one. i  
want to run the instances ...in the same server from a asingle machine..
  How can i start the instances manually...or does it start automatically whhen 
we start the TOMCAT server.
  I am using these 4 instances for load balancing.
  I started the tomcat server ONLY AND HIT THE FOLLOWING URL 
  http://localhost:8080/balancer/testLB.jsp   I encountered the following error 
  
   
  type Status report
  message /balancer/testLB.jsp
  description The requested resource (/balancer/testLB.jsp) is not available.
   
   
  can you pls help me out with the solution ASAP
  thanks a lot
  regarsds
  harryy

                
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