Avie - 2008-07-19

I can't figure out why it's doing this here is my code for the form can any help me understand why and how do I get it to say the email address of the person filling out the form?
thanks so much
:)

<?php

$where_form_is="http://".$_SERVER['SERVER_NAME'].strrev(strstr(strrev($_SERVER['PHP_SELF']),"/"));

session_start();
if( ($_SESSION['security_code']==$_POST['security_code']) && (!empty($_POST['security_code'])) ) {
mail("info@sugarcookiecards.com","Sugar Cookie Cards Online Order Form","Sugar Cookie Cards Online Order Form data:

Date: " . $_POST['field_1'] . "
PO Number: " . $_POST['field_2'] . "
Contact Person: " . $_POST['field_3'] . "
Email Address: " . $_POST['field_4'] . "
Address: " . $_POST['field_5'] . "
Payment Method: " . $_POST['field_6'] . "
Shipping Method: " . $_POST['field_7'] . "
<BR>Product 1 Item Number: " . $_POST['field_8'] . "
Product Description : " . $_POST['field_9'] . "
Box: " . $_POST['field_10'] . "
Bulk: " . $_POST['field_11'] . "
Unit Price=$ " . $_POST['field_12'] . "
<BR>Product 2 Item Number: " . $_POST['field_13'] . "
Product Description: " . $_POST['field_14'] . "
Box: " . $_POST['field_15'] . "
Bulk: " . $_POST['field_16'] . "
Unit Price=$ " . $_POST['field_17'] . "
<BR>Product 3 Item Number: " . $_POST['field_18'] . "
Product Description: " . $_POST['field_19'] . "
Bulk: " . $_POST['field_20'] . "
Box: " . $_POST['field_21'] . "
Unit Price=$ " . $_POST['field_22'] . "
<BR>Product 4 Item Number: " . $_POST['field_23'] . "
Product Description: " . $_POST['field_24'] . "
Box: " . $_POST['field_25'] . "
Bulk: " . $_POST['field_26'] . "
Unit Price=$ " . $_POST['field_27'] . "
<BR>Total for all products=$ " . $_POST['field_28'] . "

powered by phpFormGenerator.
");

include("confirm.html");
}
else {
echo "Invalid Captcha String.";
}

?>