The only manufacturer that makes dual TBird mobos is Tyan. The two models are the Thunder and the Tiger. The Thunder was the first and has onboard NiC, SCSI 160 and other stuff. From what I've read, the Tiger (that has almost no onboard stuff) is a much better choice as it's very stable and much cheaper to boot. If you consider about $250 cheap!
BTW, both of these boards require DDR ECC memory. That's it.
