This might help.
http://www.eqemulator.net/wiki/wikka...ServerLauncher
You'd have to open ports and provide forwarding to your world server for off-site zones, too. Speculation at best, since I have never even gotten a second internal server to connect to the world yet. Good luck, and great idea.
edit: oh, and access to the MySQL instance, also requiring a port fwd based on what's in your xml (3306)