Actually, it's not useless. Maybe not a whole bunch you can do with it, but you can do word processing with an older version office suite like office 97. Just because you can't run the latest software on it doesn't make it worthless. Maybe you can give it to someone who don't have any money, but does a lot of typing, or is tolerant enough of the slowness for other things. Or a system for someone to learn the basics on before getting them an upgraded one. They screw up the P1, no loss, screw up the dual core system, you just lost $1000 or so (yes, new PC users do manage to easily screw up stuff for no obvious reason at all, so don't put it past them). I can put a old P1 on craisglist for free and all kinds of people will come out of nowhere with in the first 30 minutes asking for it for their kids first system, for a school, because they need a system, but can't afford anything, the list goes on.
But it may be no more than a brick to you...