I've never had to use comments before, so I tested it on my friend's site. However, I get this error below:

Zenphoto Error MySQL Query ( INSERT INTO [code]zp_comments[/code] ([code]ownerid[/code], [code]name[/code], [code]email[/code], [code]website[/code], [code]comment[/code], [code]inmoderation[/code], [code]date[/code], [code]type[/code], [code]ip[/code], [code]private[/code], [code]anon[/code]) VALUES ("2", "darrell", "myemailaddresshere", "", "Testing this comment. How does this work?", "1", NOW(), "news", "my IP", "0", "0") ) failed. Error: MySQL server has gone away It looks like your zenphoto tables haven't been created. You may need to run the setup script.
So I follow the instruction provided by the error:

`
Zenphoto has detected that you're upgrading to a new version.

Systems Check:

PHP version 4.4.7
PHP Safe Mode
PHP magic_quotes_gpc [is enabled]

You should consider disabling magic_quotes_gpc. For more information click here.

PHP GD support
PHP glob() support
PHP gettext() support [is not present]

Localization of Zenphoto currently requires native PHP gettext() support

PHP mbstring package [is not present]

Strings generated internally by PHP may not display correctly. (e.g. dates)

PHP MySQL support
zp-config.php file
MySQL setup in zp-config.php
connect to MySQL
MySQL version 5.0.24a
connect to the database (numbers removed on example)
MySQL access rights
MySQL show tables found: zp_administrators, zp_admintoalbum, zp_albums, zp_captcha, zp_comments, zp_images, zp_obj_to_tag, zp_options, zp_tags, zp_zenpage_news, zp_zenpage_news2cat, zp_zenpage_news_categories, zp_zenpage_pages
Zenphoto core files
.htaccess file (RewriteEngine is ON)
.htaccess RewriteBase is /gallery
albums folder
cache folder
locale folders

Database tables to update: zp_options, zp_albums, zp_images, zp_comments, zp_administrators, zp_admintoalbum, zp_tags, zp_obj_to_tag, zp_captcha.

Go!
`
When I click "GO" it seems to update without a problem. But when I go back to test the comment again, I just go right back to the error page.

By the way, does it have anything to do with PHP gettext() support?
If so, how do I fix it? Thanks in advance.

P.S. - when I first started enabling comments on the news section I chose the "moderation" and commenting worked at first. But when I went to the admin to moderate, you can only delete or edit comments. Nowhere did I find where to release or activate the comment.

Sorry for the long post above (I couldn't go back and edit it any longer). I figured out the first part of the problem - the error. What happened was, I had chosen the Akismet spam filter but I don't have the ID. And I guess it threw commenting into an error. So I reset it back to "none" and it works.

I do still have the issue in the comment admin. If I use "moderate" mode there is no way for me to release the comment. Only edit or delete.

Click on the ? button and it will release the comment from moderation.

Ah, o.k. that did it. Thanks.