In a quick-quick hack, I created a new website that actually looks like the old website, but is completely redone. One big improvement is that I moved from HTML 4.0 to XHTML 1.0. Well, it's 2003, so things should move forward, even on the web.
I even managed to produced XHTML and CSS that actually validates. Tomorrow, I will have a closer look at CSS, to beautify a few things, e.g. to table on the lectures page.