After slacking off a long time, I finally got around to finishing our distributed computing team web site, complete with a brand-new theme that validates to XHTML 1.0 Transitional (most pages, at least).
I did have to replace <br> tags with <br /> tags in several .php files where they are hard-coded, and hard-coded img tags also had to be modified (need an alt="" parameter and the /> end tag at the end).
Anyway, go check it out at http://team.macnn.com and tell me what you think. I haven't really testing this on many web browsers, but it should perform well with Mozilla, Netscape 7+, Safari (OS X), and OmniWeb (OS X). iCab has some issues because it doesn't accept much CSS. As for Opera, I can only hope.