IE7 and IE8 issues (content is all over the place)

Hi,

I'm not sure what's going on here, but everything appears just fine in other browsers (FF, Chrome, Safari).

If anyone could please take a look and see why everything is all over the place in IE it would be very appreciated.

http://nintendrunk.com/forum

(I haven't tried with IE 9 yet, so if anyone can report if it's fine or all over the place... )

Thanks a lot.