Zenphoto Error

MySQL Error: The PHP MySQL extentions have not been installed. Please ask your administrator to add MySQL support to your PHP installation.

Backtrace:

   in db_connect (functions-db.php [69])
     in query (functions-db.php [116])
       in query_full_array (functions.php [78])
         in getOption (functions.php [36])
           in require_once (functions-db.php [5])
             in require_once (auth_zp.php [4])
               in require_once (classes.php [7])
                 in require_once (template-functions.php [11])
                   in require_once (index.php [9])