Thanks giginger! I've been working with someone else in the office on this so can't take full credit for the layout...
In fact a 3 column grid with fixed height boxes was not my idea, and definitely not the easiest thing to put together :-P
This is my first time at using css for a commercial project though - it was a bit scary to at first be honest, but a real learning experience that's for sure!
I quite like the fact that the design has absoluetly none of the stuff that is trendy in webdesign at the moment (apart from the simplebits icons!)
This only happens in some browsers, is something collapsing, and could it be related to a minimum height hack I'm appliny to some of the layouts.... totally stumped again :-(