[snip] The same script works fine in another win2k box running PHP version 5. Strange is that if I add print $result; right after exec ( $command, $result ); nothing is printed. When the script runs on the machine that works it prints Array obviously. So, my guess is that $command is never being executed. BTW, PHP is not running on safe_mode and the nslookup command works fine on both machines. [/snip] Make sure that PHP is running with safe_mode 'off' in the ini -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php