phpBB : Critical Error

Could not connect to the database PHP Warning: mysql_connect() [function.mysql-connect]: Unknown MySQL server host 'svr08.domain22.local' (11004) in J:\inetpub\publicinternetsite\valleyrock.co.uk\forum\db\mysql4.php on line 48 PHP Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in J:\inetpub\publicinternetsite\valleyrock.co.uk\forum\db\mysql4.php on line 330 PHP Warning: mysql_errno(): supplied argument is not a valid MySQL-Link resource in J:\inetpub\publicinternetsite\valleyrock.co.uk\forum\db\mysql4.php on line 331