To help, since I just figured out the answer to this, is redefine your query to be the initial search query plus additional parameters… for example do `<?php $my_query = new WP_Query($query_string.’category_name=shops_and_galleries&showposts=1000&orderby=title&order=asc’); ?>
<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>`
