New guy to PHP Mail Parse question

Hi everyone - new to PHP , Cold Fusion background... I've got a client with a mail form on their site that needs to be posted to an email account and it doesn't work he asked me to look at it... it's on Windows and the form has fields like this: first_name last_name dayphone_1 dayphone_2 dayphone_3 mortgage_past_due reason_for_applying In the PHP process page that he sends the form to I think it's a simple problem but it sends an email but the fields are left blank - what's wrong with the following code? <?php mail("bwaring@dataconsulting.com","Web Site Application"," hey, a form: first name: $first_name last name: $last_name day phone: $day_phone_1 $day_phone_2 $day_phone_3 -------------------------- Is Your Mortgage Current Or Past Due: $mortgage_past_due Reason for Applying: --------------------------- $reason_for_applying ------------------------------------------------ ","From: form@epic.com\n"); header("location:form_submitted.html\n"); ?>