Flash and PHP

I recently read the tutorial explaining how to use flash to develop a form and php to send the information. I've tried this and nothing is sent.
I tried the code provided with the flash.
------------------
<?

$to = "me@mydomain.org";
$msg = "$namenn";
$msg .= "$messagenn";

mail($to, $subject, $msg, "From: My web sitenReply-To: $emailn");

?>
______________________
and also tried to adapt the flash and php to a new form
_________________________
<?

$to = "me@mydomain.org";
$subject = "Member Info";
$msg = "$namenn";
$msg .= "$messagenn";
$msg ..= "$emailnn";
$msg ...= "$phonenn";

mail($to, $subject, $msg, "From: mydomain.orgnReply-To: $emailn");

?>

_____________
Input would be appreciated.
Thanks

What kind of machine is this running on? Have you ever been able to successfully send mail with php?

The machine is windows 2000 prof., with apache 2.0.35 and php 4.2.1

I have never tried to send mail using php on this server.