Change Permalink structure for Custom Post Types

Hi,

I have created two custom-post-types (‘photo’ and ‘photo365’) and all is well and good with them…except, I wish to change the permalink structure…

In settings I use the permalink structure:

http://www.myurl.co.uk/2012/01/sample-post/

This works fine for for type ‘posts’, but when I view a post of type ‘photo’ or ‘photo365’ the link is:

http://www.myurl.co.uk/photo/sample-post/

or

http://www.myurl.co.uk/photo365/sample-post/

how do I achieve http://www.myurl.co.uk/2012/01/photo365/sample-post/

where the month and year is part of the structure?

I have previously looked at other forum threads here and changed the line I have in the custom post declaration from

‘rewrite’ => true

to

‘rewrite’ => array(‘slug’=>”,’with_front’=>false)

but to no avail….

Any ideas?