gistfile1.php

// change thematic's default nav to be category based instead of page based

// Create #access
// In the header div
function mytheme_access() { ?>
  <div id="access">
    <div class="skip-link"><a href="#content" title="<?php _e('Skip navigation to the content', 'thematic'); ?>"><?php _e('Skip to content', 'thematic'); ?></a></div>
      <!-- list categories instead, see args here: http://codex.wordpress.org/Template_Tags/wp_list_categories -->
      <?php wp_list_categories('orderby=name&show_count=1&exclude=10'); ?>
  </div><!-- #access -->
<?php }
add_action('thematic_header','mytheme_access',9);

// Remove default Thematic actions
function remove_thematic_actions() {
 remove_action('thematic_header', 'thematic_access', 9);
}
add_action('init','remove_thematic_actions');