There goes what little respect I had left for you. Oh well.
... What the heck are you smoking?! XP? Jeez.
And you can't overclock a P100 to 166. That's a 60% overclock. It wouldn't handle it, let alone the puny EDO RAM it has.
As for the computer, I don't think you can do much with it. Folding is pointless, as it is too slow to make a difference. The best you could do with it is run it as a file server, a firewall, a router or a print server. Not much other use for it...
you MIGHT be able to turn it into a home made PBX. Check out http://asterisk.org/, im not sure if your machine could handle it but you could always try.