
Well, first off your index.php doesn't exist.
The top bar: It seems a bit odd to have two links for the wiki and three links for the forums within ~150px.
The header image: The slogan just doesn't sound right to me. Maybe "A real-time strategy modification for the source engine" or something like that. "A source real-time strategy modification" just sounds
really weird to me.
The nav bar: It's pretty clean and nice, I like it

Although it
could do with some extra details, it would only ruin the simplistic design.
Content: I think you need more vertical spacing, especially in the little grey box that has little details in it. The content just seems a little vertically squashed. You
could try a bit of letter spacing, but I'm not really sure how that would turn out. Generally letter spacing is fine as it is.
Sidebar: Same issue with content. Seems too vertically cramped.
Footer: It's a footer, need I say more? (No offense intended).
More work to be done, but you're on your way!
