That may be the way I wind up going, Mondo, but surely there's at least a couple of boards out there for desktop PCs that will take ECC memory.. The Asus P5WD2-E will take 'em for instance, but that board is a bit hard to find right now -- NewEgg had 'em a few weeks ago, I should have gobbled one up then.
I haven't looked at that specific board, but remember that you need a board that can take *registered* ECC memory, not *unbuffered* ECC memory. I'd be surprised to find a "normal" desktop MB that can handle registered memory.
Edit: took a quick look at the Asus MB, and as I suspected, it only supports unbuffered memory (both normal and ECC).
Darn, that may indeed be the case with that motherboard, but I'm almost certain that the official Asus site stated it accepted *Buffered* ECC memory.. I can't verify that at the moment though, as the official ASUS site is apparently down.
Well, shucks. I hate to have to replace $250 or so worth of memory, I guess I'll have to hold off on my upgrade a bit longer than I wanted to.
Thanks for the help & advice though, it's greatly appreciated.