I'm not too big on the 'Advertisement' and 'Site Details' being on the left side of the forum, I prefer for that type of stuff to be on the right side.
Your radio module is waaay too small, I can't read anything that it says. Your welcome message looks real nice, but I would make the features that your board has to offer stand out a little more, (are the asterisks necessary?) as you only have a couple of seconds to capture new guests.
Overall though, site looks clean.