Here are a couple techniques to center your CSS layout in non-standards compliant browsers (IE <8 I'm talking to you!):
Centering the layout on the page
1. IE 5.x and IE 6 quirks mode:
set the body tag to text-align: center (all body elements are centered)
reset the #wrapper div text-align: left
2. Netscape 6, prevent left side of wrapper from spilling off to the side of the page (cannot be accessed without this hack)
add min-width tag to body element
