[wp-hackers] Add Post Statuses?

[Mike Schinkel]

I'm trying to figure out how to add a new post status in wp3.0.  I run register_post_status() and it enables querying for that post type:

register_post_status(
	'hidden',
	array(
		'label' => _x('Hidden', 'post'),
		'public' => true,
		'label_count' => _n_noop('Hidden <span class="count">(%s)</span>', 'Hidden <span class="count">(%s)</span>')
	)
);

...however when I go to a post or page editor in the admin the "Hidden" status does not show up.  Clearly I need to do something else.  Can anyone suggest what that would be?  

Thanks in advance.

-Mike