Something

<?php
$msg = $_POST['uname'] . "\r\n";
$msg .= $_POST['firstname']. ' '.$_POST['lastname']."\r\n";
$from = trim($_POST['email']);
$msg .= $_POST['referedby'] . "\r\n";
$msg .= $_POST['comments'] . "\r\n";
$subject = "Worxtech Contact Request";


if(isset($_POST['radio'])){
switch ($_POST['radio']) {
case 1:
   $email_address='poppabear@worxtech.com';
   break;
case 2:
   $email_address='pip2kk@gmail.com';
   break;
case 3:
   $email_address='support@aeonhosting.com';
   break;
case 4:
   $email_address='mike@worxtech.net';
   break;
default:
   echo "Please select a contact";
  include('contact.html');
exit();
 }
}

if($msg && $from) { 
mail($email_address, $subject, $msg, "From: $from\nReply-To: $email_address\nX-Mailer: PHP/" . phpversion());
echo "Message Sent, Thank you for you feedback " . $name; 
} else {
echo "All fields must be filled in!<BR>"; 
}
} 
?>