Kirupa flash php form

I have been trying to modify the Kirupa flash php form to accept additional fields with no luck. Can anyone help? Please find .fla enclosed.
I’m probably doing something really stupid but it got me stumped:-))

PHP below:

<?php
$sendTo = "orders@machamps.com";
$subject = “Seagull Order $299 US”;
$headers = “From: " . $_POST[“firstname”] .” “. $_POST[“lastname”] . “<” . $_POST[“email”] .”>
";
$headers .= "Reply-To: " . $_POST[“email”] . "
";
$headers .= "Return-path: " . $_POST[“email”];

//Begin changes
$message = "Quantity: " . $_POST[“quantity”] . "
";
$message = "Address: " . $_POST[“address”] . "
";
$message = "Suburb: " . $_POST[“suburb”] . "
";
$message = "City: " . $_POST[“city”] . "
";
$message = "Country: " . $_POST[“country”] . "
";
$message = "PostCode: " . $_POST[“postcode”] . "
";
//End changes

mail($sendTo, $subject, $message, $headers);

?>