no one uses 800x600 anymore.. its not default any longer so there is no need to comform to those rules anymore...

I agree on the icons.. try saving them as gif you will get just about the exact same quality because no one really pays attention so much.

I dont like that it looks like its just kinda floating there, you should center the entire thing to give itself some "control" and maybe instead of white use a another color.. the layout could use some work... but my number 1 dislike is the black and white clash with green!

I really like the navigation at the top and the system for organization works very well! I always try to think of great new designs to increase ease in navigation and urs is pretty rockin!