How to setup a subdomain for mongrel

[gernot]

Hi

I've tried so hard but I can't find out how to do it. Here's what I want to do:

I've set up a new server and deployed two rails apps to it. The first one is my site app, the second one is an application.

I have two mongrel clusters running serving those two apps and I've created a listener and a virtual host for each. I can now reach my site app through www.domain.com and my second app through www.domain.com:9000

All works fine, but I want to have the url app.domain.com for my second application. How am I supposed to configure that ?

Thanks very much for any help

Gernot Kogler