Neverg!veup 0 Newbie Poster

Hi ,
I have been told to configure two tomcat instances with one apache server.
I am new to tomcat and apache process and even dont know basics of Java.
I tried my best but couldn't get result.
Can anyone please let me know the versions of apache,tomcat and java to be installed and procedure to install them and modifications to be made to run two tomcat instances at a time.

Thanks in advance