Redmine

I have redmine installed and it's running like a champ.

Is there a way for me to remove the port number in the url? I'd like to go to the address without having to hit :3000

Our network engineer has it set so that http://redmine goes right to http://x.x.x.x (the ip of the VMware server) and I add the :3000 and redmine comes up. I'd like to use that machine for other Rails apps and ask him to do the same thing.

I'm assuming he'll have to do something like
http://redmine = http://x.x.x.x/redmine
http://todoList = http://x.x.x.x/todoList
http://otherApp = http://x.x.x.x/otherApp

Right now going to the ip alone(with no port) just gives me the "IT WORKS" message.
Any advice would be much appreciated.