Go to phpmyadmin add this to your database
PHP Code:
CREATE TABLE `invites` (
`id` int(10) unsigned NOT NULL auto_increment,
`inviter` int(10) unsigned NOT NULL default '0',
`inviteid` int(10) NOT NULL default '0',
`invite` varchar(32) NOT NULL default '',
`time_invited` datetime NOT NULL default '0000-00-00 00:00:00',
`confirmed` char(3) NOT NULL default 'no',
PRIMARY KEY (`id`),
KEY `inviter` (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=39;