Centering complex lists

[sffc]

The page is
http://www.hypersoftinc.com/sffc/new.../listtabs.html


Notice how the tabs are aligned on the left. How do I make it so they are centered on the page? I want to keep the long blue banner stretching accross the entire page. I will use divs, but preferably not tables. With divs, I don't want to specify any absolute widths (like make a div for the tabs, whose width would have to be 300). How do I do this?

[Tyssen]

Does this help any?
http://www.cssplay.co.uk/menus/centered2.html