Ordering your navigation menu has always been a bit of a pain. Luckily, the new menu system in WordPress (as of v3.0) makes it as easy as dragging and dropping an item wherever you want. Go to the Appearance panel in your wp-admin and click on the Menus link. Once you are on the Menus page you can add Pages, Categories or Links to your menu and organize them by dragging them around.
You can even click on the “Screen Options” button in the top right to see more options for your menus. Once your menu is complete, be sure to add it to a Theme location or it will not appear on the front end of your site. PressWork has three theme locations for a custom menu. The Primary and Secondary navigation appear in the header, and the Footer navigation appears in the footer. Some of the menu theme locations need to be added using the PressWork toolbox since they are not activated by default.