TrifleJs in Windows Server

[vintagenub]

Hello, I'm a beginner on this and i'm trying to run trifleJs on Windows Server 2008 SP2,
here's my code;

C:> TrifleJS.exe --emulate=IE8 download_data.js

download_data.js :

var page1 = require('webpage').create(),
pag1 = 'http://10.192.XX.XX:8888/Ingenieria/logiN.do',
dat1 = 'user=myuser&pass=mypass';

page1.open(pag1, 'post', dat1);
page1.onLoadFinished = function(){
page1.evaluate(function(){
document.getElementById('frmPantalla').src='http://10.192.XX.XX:8888/Ingenieria/showScreen.do?action=doit';
document.getElementById('msj').style.display = "none";
document.getElementById('background').style.display = "none";
";

});

window.setTimeout(function () {
      page1.render('./prueba.png');
      phantom.exit();
}, 60000);

};

And i'm not getting anything.
Thanks in advance.