adding category description to “posts by category” plugin

Hi, I am using a plugin called Posts By Category.
The plugin basically lists all the posts and the title of each category on a single page.

I am trying to add the category description in there as well, but can’t figure it out how for the life of me.

Any ideas would be greatly appreciated.

Here’s the code that shows the category names and posts names.

foreach ($last_posts as $posts) {
	  $current_category = apply_filters('list_cats', $posts->name, $posts);
	  $the_output .= '<tr><td><div class="menu_title">' . $current_category . '</div></td></tr>';
          $where = apply_filters('getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'" , $r );
          $arcresults = $wpdb->get_results("SELECT * FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' AND ID IN (Select object_id FROM {$tp}term_relationships, {$tp}terms WHERE {$tp}term_relationships.term_taxonomy_id =" . $posts->term_id . ") ORDER BY post_date DESC");
	  foreach ( $arcresults as $arcresult ) {
	       $the_output .= '<tr><td id="name_' . $arcresult->ID . '">' . apply_filters('the_title', $arcresult->post_title) . '</td></tr>';
	   }
          $the_output .= '';
       }
       $the_output .= '';
       return $the_output;
}

Thanks very much,
Jenny