The About page gets it's entries from the Sitestuff category: this is a general purpose category that contains the more static info that appears on the Home page, About page, or any other pages that don't generally change.
This page has both a left-hand menu bar, and navigation in tabs along the bottom of the header.
Take your pick, design-wise.
Only the CSS has been changed to accommodate the differing needs of the two menu systems.
The Menubar on the left uses jQuery and CSS for the fly-out submenus.
The Menu tabs above uses only CSS.