Hi Romun,
We use a feature called stylesheets on the website in which we specify precisely the font size. The advantage of this is that it reallly helps laying things out, as you always know how much space text is going to take up. The downside is that you can't resize it using your browser's text size options. May I ask what resolution you're running at? Is it higher than 1024 x 768 - as this would make the text very small and difficult to read.
Paul.