Stability being the sought after goal, I'd look at the
Tyan' ">http://www.tyan.com/products/html/athlon.html MPX offerings. The Thunder K7X Pro (S2469) is a feature packed workstation/server board, where the Tiger MPX (S2466) is the plain jane rendition (no onboard scsi, no onboard video).
Memory would be
Crucial' ">http://www.crucial.com/store/l...RAM&package=allModules , PC2100 ECC. At least a gig, but the more the better.
And then go with a pair of MP 2600+ or MP 2800+ processors.
Should be a smooth, fast, stable workstation.