socket.io + express networkerror: 404

Possible Duplicate:
socket.io: Failed to load resource

A simple express + socket.io hellow world app seems doesnt work, i keep getting

"NetworkError: 404 Not Found - http:// localhost:3002/socket.io/socket.io.js"

Anyone know this issue?

code:

app.js

var express = require('express'),
http = require('http');

var app = express();
var server = http.createServer(app);
var io = require('socket.io').listen(server);


app.configure(function () {
app.use(express.static(__dirname + '/public'));
});

app.listen(3002);


io.sockets.on('connection', function(socket) {
socket.emit('news', {hello: 'world'});
socket.on('my other event', function (data) {
    console.log(data);
});
});

index.html

<script src="/socket.io/socket.io.js"></script>
<script>
var socket = io.connect('http://localhost');
socket.on('news', function (data) {
    console.log(data);
    socket.emit('my other event', { my:'data' });
});