Well it’s a 3 column layout. Could have been done with a couple of nested tables, although they do take longer to load; something to do with the way browsers calculate tables from what I’ve read.
I did find a pure 3 column css layout and bookmarked it a while back.
It needs to be done from scratch but the good thing is there isn’t a huge amount on the page plus many of the banners are the same size so that will make it easier.