Heres what I think:
1. Freewebs. Minus points for you, foo!
2. Template (Freewebs template even). They suck, just write your own site ;
3. A shorty bout each section;
a, Creatures: Very nice section, one of my favorites. The blue on-dark on the Allies section is very hard to read though, I suggest making it white or a brighter version of blue (may I suggest something like #52BCFF?). Very resourceful and quite interesting reading.
b, Weapons: Very good section indeed. Good screenshots, allthough I'd add a screenshot from the half-life model viewer too.
Very full of facts, some interesting.
c, Game info: Nice, again. Too few pictures
d, Before you start...: Excellent for beginners. Allthough you might wanna improve the paragraphing - everything in the same font, size and colour just looks confusing. I suggest making them different shades of one colour, one for each paragraph and using enter alot more :D.
Overall: Very good content, kind of bad display.