It's looking pretty good, but I think that the one at http://caih.org/wine/WineHQ.html is a little better. What I really don't like about them is that everything's a bit too rounded, which looks a little tacky. The icons, tabs, and white backgrounds could all be squarer. Also, the icons and links are probably a bit too big.
Anyway, I hacked together a quick idea of how the tabs could possibly be made a bit nicer - http://stephengentle.com/media/images/wine/tabs.png . I didn't put in any of the content, or most of the boxes, but it's more the tabs I was focusing on. I also made the wine glass logo a little smaller, and the main box less rounded - which I think looks better. The WineHQ test could probably be made a little smaller as well...
-Stephen