Thanks for the help guys.
I think I'll play with a local Tomcat environment, see what I can come up with. I probably wouldnt need to talk the boss into buying a new server - seeing as how this is just an internal application, speed isn't a concern. I think I'll look alot deeper into mod_jk, and if that doesn't suit well for whatever reason on the production server, I can always run a full out Tomcat installation on another port, which isn't really the end of the world. And if the boss doesn't like those solutions he can shell out some cash for a new dual-core opteron server!
Thanks again