Site check needed, all works well except in Win IE6

Hi,

i just revamped our website, completely in css and php. The site just passed the xhtml validation, it shows correctly on a Mac in Safari, FireFox, IE and Navigator 6 and on PC it works correctly in FireFox, but not in IE6.
Could someone plesae check it out? Perhaps i am overseeing something?

http://www.chickenbyte.com

You will notice that the left and right column are not next to eachother in IE6, while the float:left has been set.

Thanks in advance and kind regards.
Florian Soenens