okay, I am now on the bus, let me give you a quick answer to your question 3 as well.

Basically you wanted the function that are listing all categories at the top to be shown at the bottom as well. You will not be able to do that without having to alter some of the codes.

If you really want to do it, then look for the tpl_footer.php inside your templates/common folder. Add the following codes just before the "show IP" codes:

<?php require($template->get_template_dir('tpl_modules_categories_tabs.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_categories_tabs.php'); ?>

The function at the header will then be copied to the footer area. You will have to play around with the css a little to get the color going for you.

Have fun.