Howdy. I have a category search on the Home page of my Wordpress powered site shackn.com. It uses the following code: <form action="<?php bloginfo('url'); ?>" method="get"> <?php wp_dropdown_categories('hierarchical=1'); ?> <input type="submit" name="submit" value="view" /> </form> Code (markup): In relation to the way I write posts and assign them to specific categories, my technique is as follows: *Every post is assigned a location from the children of "Location" category. *Every post is ALSO assigned to EITHER the "Accommodation" or "Surfbreaks" category. On the "Results page", after the user selects from the drop-down list on the homepage and presses "Submit", I would like the results of this search, to only display posts from only the "Surfbreaks" category, but not the "Accommodation" category as well. Any ideas how do I do this?