Php - Ajax Post Failing In C#?

I'm trying to post to an external script using ajax so i can mail the data, but for some reason my data is not making it to the script.

$(document).ready(function() {
$("#submitContactForm").click(function () {
$('#loading').append('<img src="http://www.xxxxxxxx.com/demo/copyshop/images/loading.gif" alt="Currently Loading" id="loadingComment" />');
var name = $('#name').val();........

the php script is simple (for now - just wanted to make sure it worked)

<?php
$name = $_POST['name'];
$email = $_POST['email'];
$comment = $_POST['comment'];
$to = 'xxxxx@xxxxx.com';
$subject = 'New Contact Inquiry';
$message = $comment;
mail($to, $subject, $message);
?>

the jquery is embedded in an .aspx page (a language i'm not familiar with) but is posting to a php script. i'm receiving emails properly but there is no data inside. am i missing something? i tried to bypass the variables in this example, but its still not working.