PHP mail question

I’ve got this as a PHP page that a flash movie (contact form) is using to send to email:


<?PHP
$to = "myemailaddress@emailaccount.com";
$subject = "A message from your site";
$message = "Name: " . $theName;
$message .= "
Email: " . $theEmail;
$message .= "
Guitar Model: " . $theModel;
$message .= "

Message:
 " . $theMessage;
$headers = "From: $theEmail";
$headers .= "
Reply-To: $theEmail";

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

?>

Works fine. But what I’d like to see is the text headers (Name, Email, etc.) that show up in the email to be bold with the imputed text normal. In other words, it would show up in the email as:

Name someone somename
Email something@somewhere.com
etc.

Everytime I drop a <b> </b> in the script it shows up in the email. Any suggestions?