The only difference is that we can define the exact font size we want using the style sheet, whereas Netscape has to use the old, abstract font sizes (1,2,3, etc.). So we end up with a menu that looks ...
There is also a bunch of new font options available; Baskerville, Caecillia, Helvetica, Helvetica Light, Lucida and Palatino. Kindle for PC is compatible with most versions of Windows ...