The dtabs plug in is very useful. It creates dynamic rounded corners tabs and a horizontal menu. It greatly simplifies the process for creating a menu of this sort. I tinkered with the plug in while tinkering with the Kubrick Tabs theme. You can add a little code to your own theme to enable this functionality. I am trying to modify Kubick Tabs beyond recognition and am finding it hard to do so I’ll probably end up using it in my final theme for France Tales. It beats using the jQuery library as some web hosts don’t support it. Try it out.