When I came to look more closely it wasn't so easy to unpick and alter. V2.0 is though.
I removed a load of redundant code from the css
I reduced the width of the page to something more sensible.
I made all the text sizes relative
Put in the Google shiv link
I made the logo text (was an image of text) with a google font
I replaced the image based rulers with css borders
I made three alternative page templates without the sidebar, without the subheader div and without either.
It works pretty well now
I removed a load of redundant code from the css
I reduced the width of the page to something more sensible.
I made all the text sizes relative
Put in the Google shiv link
I made the logo text (was an image of text) with a google font
I replaced the image based rulers with css borders
I made three alternative page templates without the sidebar, without the subheader div and without either.
It works pretty well now