One of my biggest challenges when I started using Drupal was how to create a menu that used images. I created a support issue at drupal.org, either my english sux or maybe the solution was to obvious. This tutorial is using the same method as the apple menu. It uses one image and background-positioning. You can create very nice menus using this method, the only problem is if you want to remove or add a menu item, most likely you have to edit the menu-image.