Hey , good site , here are my C&C

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First, its a well built site , good use of blocks and headers .. i felt first i was overwhelmed with information on the front page .
The logo and slogan to the right expand to the extremes ( see attachment - Untitled ) , which doesn't look too well on my screen... your posbits are very confusing .. you should try to make it more organized .. also , since this is a vBulletin site as in , to support vB users , shouldnt you upgrade to vB4? or shouldnt you be on vB4 ? ..
Also your buttons although you have some good stuff going on , they look very choppy to me , perhaps smooth them out , here is an idea i created : check attachment "delete".
Overall , i would say its a 6.5/10 , good job , but you can do better.
Bets regards