[hnn]

CREATE TABLE `comp` (
 `k_id_COMP` int(11) unsigned NOT NULL auto_increment,
 `Name` varchar(255) default NULL,
 `BillingAddress` varchar(255) default NULL,
 `BillingZip` varchar(10) default NULL,
 `BillingCity` varchar(255) default NULL,
 `BillingCountry` varchar(255) default NULL,
 `VisitAddress` varchar(255) default NULL,
 `VisitZip` varchar(10) default NULL,
 `VisitCity` varchar(255) default NULL,
 `VisitCountry` varchar(255) default NULL
 PRIMARY KEY (`k_id_COMP`),
) ENGINE=MyISAM AUTO_INCREMENT=1 COMMENT='Comment'

Tabellen som är auto_increment måste alltid vara Primary Key.