For a first template i guess its not bad. But its not perfect.
Suggestions :
Home page, your logo has a blue rectangle around which is an image link, you should set the border to 0 so there is no borders.
Colors : some light green, some black for the fonts and some light weird blue, and too much white. I suggest you to put something around all that blank area.
Feeling : i personaly feel like everything goes a way and other things go an other way, well its floating around, i think you should set some areas where stuff sticks to it, and not just "move around" if you know what i mean.
I also suggest using darker colors if its a LAN gaming community, also something even darker if you are going to play UT 3

Good Luck