PHP mail form - modification

Love the form tutorial – Thanx!

Q: how can i send a confirmation email with a generic text + form output to the user who is sending the form? Here is the code:

<?php
if(isset($_POST[‘submit’])) {

$to = "msn@msn.com"; 
$subject = "Subject!";
$name_field = $_POST['name'];
$email_field = $_POST['email'];
    $phone_field = $_POST['phone'];
$dropdown = $_POST['drop_down'];
    $city_field = $_POST['city'];
    $terms_field = $_POST['terms'];

foreach($_POST['check'] as $value) {
    $check_msg .= "Checked: $value

";
}

} else {
$body = "Full Name: $name_field
$check_msg E-Mail: $email_field
$check_msg Daytime Phone: $phone_field
$check_msg State: $dropdown
$check_msg City: $city_field
$check_msg Terms & Conditions: $terms_field
";

echo "Data has been submitted to $to!";
mail($to, $subject, $body);

} else {
echo “blarg!”;
}
?>

Thanx!