Link ordering in sidebars

I’ve been using the WordPress software to create a website for a client who likes the idea of maintaining her own site, but isn’t too interested in being a blogger.

Her de-blogified site can be seen at:

http://www.resultsmarket.com/

Here’s my question: I’m trying to make the order of the links in the right-hand sidebar the same as the order of the tabs (sans the home page) at the top of the pages. I’d also like the articles and tips lists in the sidebar to display so that the most recent article or tip is at the top of the lists.

I’m pretty sure that what I’m trying to do involves tweaking the sidebar.php file, but I haven’t hit upon the magic tweak yet. I think this page may have the answers, but I’m still a WordPress rookie:

http://codex.wordpress.org/Template_Tags/wp_list_pages