Hey Tim,
I run IE7 on my Home PC. It seems that your main webpage is not displaying properly in IE7. None of the "Tabs" are there on the Left of the page. The Placeholder column is there, but no tabs/buttons are visible (nothing to click on). Luckily, you still have links to the Order Page, and the Message Boards on the main body of the page.
I just thought you should know. That was the only PC I have used to view your site with IE7 - but I doubt it is my PC...
As IE7 is pushed out to more and more people via WU, I'd expect more users to have this problem...
Rock and Roll