phpBB : Critical Error

Could not connect to the database PHP Warning: mysql_connect(): Can't connect to MySQL server on '192.168.100.30' (10061) in \\192.168.100.10\Site\eblocks\forum\db\mysql4.php on line 48 PHP Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in \\192.168.100.10\Site\eblocks\forum\db\mysql4.php on line 330 PHP Warning: mysql_errno(): supplied argument is not a valid MySQL-Link resource in \\192.168.100.10\Site\eblocks\forum\db\mysql4.php on line 331