Mass-Enable Commenting on CCK-Built Content-Types
Here's an SQL query you can perform in PHPAdmin (or wherever) to get the job of mass-enabling comments on all the individual nodes of a specified content-type done, en-masse.
UPDATE `node` SET `comment` = '2' WHERE `type` = 'YOUR-CONTENT-TYPE-NAME'
Useful for when I imported a load of content into a CCK-built content type.

Verfied: works like a charm.
Works perfectly, thanks for your contribution!
Regards,
Robert de Bock
http://meinit.nl/