Sure, what you want to know? May be we could progress into writing a howto for this one as well.
Setting up a small LAN is relatively easy task, beowulf is a whole different animal. I had it once but soon realized that I had nothing to do, I mean what project do I make use of it? Plus too much electricity consumption for a bunch of old P 233s don't make any sense at all since I can get much more powerful X2 duo for relatively cheap now adays. :/