Setting up cluster using Macs
 

Aloha OF users,
Is there anyone out there who has experience setting up a cluster for OpenFoam using Mac computers (OS X 10.7 or 10.8)? I have three MacPro Dual Quad Core (8 CPU's ea.) laying around that I'm trying to unite... Admittedly, I am a novice when it comes to parallel processing, so I would be thankful for any constructive advice or comments from those of you who know what you're doing. Thanks in advance.
mahalo
chris