Ebay is your best bet on getting a sawtooth logicboard. Everything else in the B&W in compatible so you don't need to worry about getting new memory and such.

As for the case there might be a few logicboard mounts that won't match up but it's a easy fix. Just use electrical tape to cover up the miss matched mounts. If you want to be hardcore about it you can drill or grind off the old mounts and buy new mounts from allelectronics.com

You might want to invest into a AGP video card sooner or later but if you're not planing to use the system for high end graphics then you don't have to worry.
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