That's pretty nifty. (I've registered as traherom.)
I like the (visual) design for the most part, a couple of things I'd say:
- The login boxes and buttons at the top are rather hard to see. At the very least, I'd make the text in them some color other than black.
- Font tags are are close cousins to cancer, AIDS, and the bubonic plague.
There's a bunch of them, but if you ever get the chance... 
- I'm not sure what the little bar on the left is, but maybe you could fill the space in between the images with a color...
--EDIT--
I just viewed the page in IE and I see what the bar is. Doesn't work in Firefox:
(Image not relevant anymore.)
--EDIT 2--
Few other things:
- The forms link at the bottom goes to forums.php, not forum.php as it should.
- Um... how do you get into the forums? I can't figure it out in Firefox or IE