I have not heard of this animal you speak of. Have you tried a veterinary website?

wink

Seriously, though, I have not seen rackmounts for these machines except what you were talking about. I've seen some good U4's around and I'd suggest buying an old one and moving the machines into the old cases, though some modding will need to be done. Like that's a bad thing.
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MacBook 2GHz Intel Core 2 Duo w/ 2GB DDR2 RAM & 120GB SATA 5400RPM HDD
Canon Rebel XTI
Google Cr-48 Beta Laptop