I must tell you that the document looks OK in IE8, so that if you need a temporary redirection, do it for IE7 and below (as in IE6 everything is a mess - no wonder, IE6 is a mess by definition, so don't bother to code for it - just leave the redirect later for IE6 only)
Look here the list of IE conditional comments:
Now, back to your page. IE7 is right, after all . You have used an XHTML Doctype, but you have also used a deprecated attribute for your divs: align="center". In fact, align is an HTML attribute used only for table's elements (tbody, tr, td, etc), but not for DIVs.
To center elements on the document you may use CSS. Either text-align (if the elements to be centered are inline elements - like textnodes, span, links, images...) or left and right margin:auto for block-level elements (divs). Here's an article about centering:
You may google for more ...