Question : Set tomcat home

How do I set tomcat_home if I have 2 tomcat installed on the same system.
c:\tomcat
c:\tomcat1

Answer : Set tomcat home

you can't, you need to change the environment value if you want to change the instance used. A good way to manage it is to use a differenet user for each different tomcat instance.
That way you can have separate environments for each instance.