Looks really good. Nice fast server too. I only have a couple of tweaks to suggest... 1st off, the banner at the top is a really huge file. You could try using flash for the animation of the students, and then use more slices for the rest of the logo.
I think the resolution selector thing is excessive and not needed. Just send everyone to the 1024x768 version since that is almost identical - the only diffrence I noticed was that the 800x600 version's banner was smaller. Might not be a bad idea to use that on the main site anyway.
Instead of having an HTML file to redirect, I would reccomend using .htaccess on your server.. its faster and the search spiders can follow it far better. What it would look like is something like:
Redirect /
http://www.shsrobotics.org/05
More information can be found all over about it, but heres some sites that explain it pretty well URL=http://www.javascriptkit.com/howto/htaccess7.shtml]http://www.javascriptkit.com/howto/htaccess7.shtml[/url]
http://www.affiliatetip.com/affiliate_tip_30.php
Finally, and the simplest of all, I prefer sites that the main table is eaither the size of my browser window, or at least centered in it. Centering it should be fairly easy... hopefully.
Anyway, its all just suggestions, and your site is great as it is. Good luck at the competition. BTW, php is generally better than frames as someone above said, but your site uses the frames very well and I dont think its really a problem.
*scuttles back to work on 1523's website*
EDIT: Doh, put .com instead of .org in the redirect
EDIT2: Just noticed that in your link section the link to the first cad libary dosent work because of a couple of spaces put in the url...