Using Dates in Custom post_type Permalinks in Wordpress 3.0

Question

I'm adding a custom post_type to Wordpress, and would like the permalink structure to look like this:

/%post_type%/%year%/%monthnum%/%postname%/

I can't figure out how to add the date tags. Using this code, gives me /my_type/example-post-slug/:

register_post_type( 'customtype', array(
    ...other options...
    'rewrite' => array('slug' => 'my_type'),
));

How do I include the dates?

Answer 1

Found the answer here: http://shibashake.com/wordpress-theme/custom-post-type-permalinks-part-2