HardwareHeave nand Cryo PC are having a nice contest, you can check out the details over here.
Today HardwareHeaven is announcing, in conjunction with Cryo PC, a unique and high value competition to win a completely custom designed (by the winner) PC.
Basically Cryo PC are offering people the chance to design their own case, from scratch and will choose the best entry, get it professionally drawn up and then built. They will also fill it with components of the winners choice, up to the value of £2500 (roughly $3900 at current exchange rates but that will probably fluctuate quite a bit).
There are also smaller prizes for those who do well but don’t win, including a Radeon 6970 and Bulldozer CPU/Mobo bundle.