Subdomains in Node.js with Express for Nodejitsu - node.js

Question

I'd like to set up some subdomains for my Node.js app. I've built my site with express.js, and now I'd just like to throw up a little web tool on a subdomain of my site. I've tried using the vhost middleware with little luck, but am open to other approaches.
Any help would rock!
Ideally, I could just drop a new express app in a sub directory change a few lines of code, maybe change some DNS settings at it would work. The reason I'd like this is so that I can reuse a fresh instance of stylus and jade with new layouts and css styles and so forth.
Here's my normal app.js, the commented line is the attempt to use vhost.
var express = require('express'),
routes = require('./routes');
var app = module.exports = express.createServer();
// Configuration
app.configure(function() {
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.set('view options', { layout: false });
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use('/courses', function (req, res, next) {
var privates = require('./.private.json'),
couch = require('nano')('https://' + privates.dbCreds.username + ':' + privates.dbCreds.password + '#wamoyo.iriscouch.com/');
});
app.use(require('stylus').middleware({
src: __dirname + '/public'
}));
app.use(app.router);
app.use(express.static(__dirname + '/public'));
// VHOST - SUBDOMAIN
// app.use(express.vhost('adventures.innovationbound.com', require('./adventures/index').app));
app.use(function (req, res, next) {
res.status(404);
res.render('four', {
title: "Innovation Bound",
now: new Date().getFullYear()
});
});
app.use(function (err, req, res, next){
console.error(err.stack);
res.send(500, 'Something broke!');
});
});
app.configure('development', function() {
app.use(express.errorHandler({
dumpExceptions: true,
showStack: true
}));
});
app.configure('production', function() {
app.use(express.errorHandler());
});
// Routes
app.get('/', routes.index);
app.get('/about', routes.about);
app.get('/services', routes.services);
app.get('/events', routes.events);
app.get('/blog', routes.blog);
app.post('/contact', routes.contact);
// Courses
// app.get('/heartbeat', routes.heartbeat);
app.get('/courses', routes.courses);
// Tools
app.get('/point', routes.point);
app.listen(3000, function() {
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
});
This is using express 2.5, I wouldn't mind migrating over to 3 if need be.