Here is the home of my Beast!
Top Left:: I drilled the holes in the front of the case with a 5/8's drill bit.
Above: This is a High Output 120mm Fan from Y.S. Tech. I cut the hole with a hole saw (imagine that!)
<--Right There: The rear shot shows you the 80mm exhaust fan and the ass-end of my Powersupply (its got 2 fans of its own)