heh,"heatsink" might sound like a big deal,but its just a piece of metal(preferably copper)connected to a fan...the metal wicks away heat from the processor and the fan disperses it.Most heatsinks are about the size of a fist and they simply clip on(to the cpu).
hmmm...I wonder how much it would be to build a super server(like huge storage,ram,dual opterons e.c.t).Now that would be a fun contribution.
Try once,fail twice...