My old computer is a lost cause, but I just bought a refurbished Dell for less than $200.00! I was going to fix my old one, but I'm not sure what type of sticky problems I'd run into swapping out the motherboard. Considdering the age of my opperating system and Microsoft's license protection, it might not even boot. The USB ports were fried when the power supply failed. A mother board wouldn't be cheap, and besides, I made the mistake of putting some Symantec software on that system. Beware Norton's 360!
In any case, is 512 Kbps upload fast enough to run a server, and how difficult will it be to configure the posrts to get through a router? Note: I wouldn't touch a refurbished Gateway product with a 10.5' pole. Dell, well, I still considder it a junk machine, otherwise I wouldn't contemplate using it as a server. 2.66 GHz should be plenty fast, though I don't know how fast the motherboard is. I'm sure it will suffice.
Now I'm worried about how to go about wiping off all the crapware! Oh, I hate getting a new computer! At least, I won't have to load this one with software.