I made a tiny change, but otherwise, those specs are correct. We will be getting them up on the website, hopefully this week.
Mfavre, the Geforce4 is a pretty old card, so yeah, it's not surprising that it doesn't look as good on your computer as in the screenshots. My computer at home has a Geforce2 card and the other specs are the same as yours. The high quality graphics worked fine (which is good because you get anti-aliasing), but the textures weren't as nice looking as on my computer at work (which has a much newer Geforce card, and is incidentally the computer most of the screenshots and gameplay videos were taken from!)