I have a web site that I administer that uses Apache 2.0 on the front with Tomcat 6 on the back-end (with mod_proxy proxying the connection between the two).
I want to be able to use the same VirtualHost to also access the phpMyAdmin application running on the box. So, for example, www.mywebsite.com will pass all traffic to Tomcat, but www.mywebsite.com/myadmin (with obvious security) will pass traffic to phpMyAdmin.