I have tried searching for a similar issue in the forums, to know success.
I believe this is related to the way that Internet Explorer applies padding and other css styles.

The site looks great in Firefox, Opera, and Safari. But in IE (tried 6 and 7), it has a lot more padding around the center content and around the top navMain links. This is mostly problematic because it is making the center content (like product info) much too narrow.

Does anyone have experience with this issue and know how to resolve it? Should I be using an alternate style in my css for centerBoxWrapper perhaps?

The site is: http://www.5thavenueresale.com/index.php?

Running ZenCart 1.3.7