SQL problem: top 5 pro kategorie

CREATE TABLE `links` (
`id` int(10) unsigned NOT NULL auto_increment,
`title` varchar(60) collate latin1_general_ci NOT NULL,
`url` varchar(255) collate latin1_general_ci NOT NULL,
`description` text collate latin1_general_ci NOT NULL,
`insertdate` datetime NOT NULL,
`referers` int(11) NOT NULL default '1',
`outbound` int(11) NOT NULL default '1',
`place_id` int(11) NOT NULL default '1',
`backlink` varchar(255) collate latin1_general_ci default NULL,
`admin_email` varchar(255) collate latin1_general_ci default NULL,
`status` enum('online','offline') collate latin1_general_ci default 'offline',
`category` enum('black jack', 'hookers', 'booze') collate latin1_general_ci NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `ix_url` (`url`)
) ENGINE=MyISAM AUTO_INCREMENT=761 DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci