<?php
$command = escapeshellcmd("nbtstat -A " . $_SERVER["REMOTE_ADDR"]);
if (strtolower(substr(PHP_OS, 0, 3)) == "win")
{
  exec($command, $result);
  array_pop($result);
  print substr(array_pop($result), 18);
}
else
{
  print "THE OS IS NOT WINDOWS 2000";
}
?>