Min egen kode for, at sende et postkort.....Er sikker på du godt kan bruge dette. 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>send billedet</title>
</head>
<body>
<?
$image = $_POST['handling']
$handling = $_POST['handling'];
$ditnavn = $_POST['ditnavn'];
$dinmail = $_POST['dinmail'];
$modmail = $_POST['modmail'];
$besked = $_POST['besked'];
if (!$handling) {
Echo $billede;
?>
<form action="<? echo $PHP_SELF ?>" method="POST">
    Dit navn: <input type="text" name="ditnavn"><br>
    Din mail: <input type="text" name="dinmail"><br>
    Modtagers Mail: <input type="text" name="modmail"><br>
    Besked: <textarea rows="15" name="besked"></textarea><p>
    <input type="hidden" name="handling" value="udfyldt">
    <input type="submit" value="send">
    </form>
<?
}
else if ($handling == "udfyldt"){
if (!$ditnavn || !$dinmail || !$modmail) 
{ echo "Du har jo ikke udfyldt alle felterne. Prøv igen, smarte!";
  echo '<a href="mailattach.php?handling=">Du skal udfylde alle felterne</a>';
}
else if (!$besked){
  echo "Der er ikke nogen besked på din mail...";
   echo '<a href="dinindexside.php?handling=">Du skal udfylde alle felterne</a>';
   }
else {
   
   $fileatt = "1.jpg"; // Path to the file                 
   $fileatt_type = "application/octet-stream"; // File Type 
   $fileatt_name = "1.jpg"; // Filename that will be used for the file as the attachment 
   $email_from = $dinmail; // Who the email is from 
   $email_subject = "Visual tours e-card from " . $ditnavn . " in Copenhagen."; // The Subject of the email 
   $email_message = $besked; // Message that the email has in it 
   $email_to = $modmail; // Who the email is too 
   $headers = "From: ".$email_from; 
      $file = fopen($fileatt,'rb'); 
      $data = fread($file,filesize($fileatt)); 
      fclose($file); 
   $semi_rand = md5(time()); 
   $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; 
   
   $headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\""; 
   $email_message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type:text/html; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $email_message . "\n\n";
   
      $data = chunk_split(base64_encode($data)); 
   $email_message .= "--{$mime_boundary}\n" . "Content-Type: {$fileatt_type};\n" . " name=\"{$fileatt_name}\"\n" . "Content-Disposition: attachment;\n" . " filename=\"{$fileatt_name}\"\n" . "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n" ."--{$mime_boundary}--\n"; 
   $ok = @mail($email_to, $email_subject, $email_message, $headers); 
   if($ok) { 
      echo "<font face=verdana size=2>Uuuuh så vigtigt, at den kom godt afsted!</font>"; 
   }else{ 
      die("Sorry but the email could not be sent. Please go back and try again!"); 
   } 
   }
}
?>
</body>
</html>