Right Sidebox moves over when in categories on IE

Every other screen on the site looks fine, but when i go into catagories the center moves over and so does the right sidebox. This only happens in IE. I tested it in FF and it works fine. Looked over the posts and in the tutorials and didnt see this exact problem. If you see the answer please respond with the exact block of CSS on the stylesheet i need to change and what I need to change it to, or if i need to add a block of code to the stylesheet to stop this from happening. Thanks. ( Be warned :shocking:I am designing a store to sell adult DVD's for a local store in town). The website is http://www.net-flixxx.com/store/

Thanks for any info you can help give me. been trying to figure this out fir 2 days now and i kinda feel like this -> :lamo:

believe reason is due to content in middle column not enough to fill the 'block' and so it allows the right side to 'come in'

you could try adding

width:100%;

to the .centerColumn in css