var Service = require('node-windows').Service;

// Create a new service object
var svc = new Service({
 name:'Hello World',
 description: 'The nodejs.org example web server.',
 script: 'C:\path\to\helloworld.js'
});
// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
  svc.start();
});
svc.install();