I posted a site at http://www.geocities.com/calua_pataca/29Mar2004_1/index.html. If you open it in IE6 and Moz based browsers, it works fine (or at least it did with me. If it doesn't, don't hesitate). In IE 5.x, however there seems to be a problem. If you look in the CSS, you'll see that the content div has been set to a width of 72%. IE5.x apparently interprets this in a somewhat odd manner, as it's 72% seem shorter than other browsers'. If I set this width to 75%, it shows up fine on IE5s, but get's messed up elsewhere.
There's also a problem in IE5.0 (not on 5.5) concerning the distance between the first right column (with the links) and the yellowish column bellow it, but it seems a different topic, so I'll post it elsewhere.
Anyone has some clue as to why this happens?
width in ie5 and 5.5 different than on everything else
Your using an exact pixel value for the container so you could use pixel values instead of percentages for the content and right columns.
Hope that helps