Everytime I attempt to post I get this message.

Fatal error: Cannot redeclare mysql_die() (previously declared in /home/phpbbweb/siteadmin/mod_spam_posting.php:162) in /home/phpbbweb/siteadmin/mod_spam_posting.php on line 162
Can someone please advise? I need to be able to admin my forum ASAP. But seem to be locked out with this message appearing everytime I attempt to post a message.

Help Please??