Contact form problems

hi,
i creatad a contact form as part of one of the external swfs of my web site. the contact form uses php, but i am not able to make it work. could someone help me???

this is my url:

http://tributa.freespaces.com/

here is some code:

//send button is inside movie clip “formbuttons”
on (release) {
_parent.campos.loadVariables(“email.php”, “POST”);
}

//form clip’s name is “campos” and has this code
onClipEvent(data){
// show welcome screen
_parent.campos.nextFrame();
_parent.formbuttons.nextFrame();
}

//What am I missing in that send operation? Keep in mind that this form is inside a contact.swf which is externally loaded into a main.swf

//this is the code of my php:

<?php
/***************************************************\

// First, set up some variables to serve you in
// getting an email. This includes the email this is
// sent to (yours) and what the subject of this email
// should be. It’s a good idea to choose your own
// subject instead of allowing the user to. This will
// help prevent spam filters from snatching this email
// out from under your nose when something unusual is put.

$sendTo = "tributa@coqui.net";
$subject = “MENSAJE DESDE TRIBUTA.ORG”;

// variables are sent to this PHP page through
// the POST method. $_POST is a global associative array
// of variables passed through this method. From that, we
// can get the values sent to this page from Flash and
// assign them to appropriate variables which can be used
// in the PHP mail() function.

// header information not including sendTo and Subject
// these all go in one variable. First, include From:
$headers = “DE: " . $_POST[“nombre”] .” “. $_POST[“compania”] . “<” . $_POST[“email”] .”>
";
$headers .= "TELEFONO: " . $_POST[“telefono”] . "
";
$headers .= "ASUNTO: " . $_POST[“asunto”] . "
";
// next include a replyto
$headers .= "Reply-To: " . $_POST[“email”] . "
";
// often email servers won’t allow emails to be sent to
// domains other than their own. The return path here will
// often lift that restriction so, for instance, you could send
// email to a hotmail account. (hosting provider settings may vary)
// technically bounced email is supposed to go to the return-path email
$headers .= "Return-path: " . $_POST[“email”];

// now we can add the content of the message to a body variable
$message = $_POST[“mensaje”];

// once the variables have been defined, they can be included
// in the mail function call which will send you an email
mail($sendTo, $subject, $message, $headers);

?>

please help…