I haven't ever messed with it, but judging by the source related to it, I would think the table would be something like this:
Code:
CREATE TABLE `tellque` (
`id` int(11) unsigned NOT NULL auto_increment,
`date` varchar(65) NOT NULL default '',
`receiver` varchar(65) NOT NULL default '',
`sender` varchar(65) NOT NULL default '',
`message` varchar(256) NOT NULL default '',
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
I only looked at the source for it briefly, but as far as I can tell, the tellque doesn't actually get sent to clients automatically after they finish zoning. They would have to run the #viewmessage command.
Though, it seems like messages could be checked and automatically sent during the finishing zoning process.