UI Tabs Alignment in IE

Finding the jQuery Tabs the other day saved my bacon! I am loving the
ease of use. I have just one small problem that I just can't find. On
Mac FF and Safari, the tabs are beautiful. On XP FF, they work great.
However, on XP IE6 or 7 their is a 30px (?) gap under the tabs to the
rule. I can't find any CSS to fix this. Any ideas?
Page with the issue:
http://adlets.org/Create+Adlet/
Thanx
Marc