The layout great in IE 6 at 1280*1240, although there is a fairly big white space between the topbanner and themaincontent.
At 1024*768 there is still a relitively large white space between the topbanner and maincontent.
When i resize to 800*600 the layout is perfect, with no large white spaces or anything.
At 640*480 the maincontent overlaps the topbanner.
Also, on all resolutions, as Daria has already said, the menu jumps about alot.