Well, I have a friend who commited a mortal sin...
of course, he's oblivious to this, as he isn't a hardcore nerd... he was mostly just asking 'cause he's kind of down on his luck... he asked me if I'd be willing to part from one of my computers.
I of course, immediately decided to build him a cheap system, 'cause I ain't giving up my Win98-still-runs-my-old-games rig.
If you want to go cheap, it's usually best to look into a bundle (at least it's been my experience thus far). If you have a Fry's Electronics or the like, these deals can run into the Ub-ah-schweet... still, for a guy in the sticks (like me), deals are available at newegg and directron.
So, I found out how to build a pretty decent system for under $200.00.
The ultimate bargain hunter could probably do better, but a Sempron 3000+ for a guy who doesn't play games isn't too shabby (I should really try to make some gamer friends out here... but I just haven't had the time... dangit).
So, let's look into this shall we?
Cheap case: $15.00
Mobo and Proc: $80.00 (Sempron 3000+ and ECS
mobo with integrated sound and video)
PSU: Got one of those lyin' around. Otherwise, cheap-ass power supplies usually come with the case.
RAM: 512 Megs of cheap
PC-3200 goodness. $29.00
HDD: for $40.00 you can get a cheap 80GB Hitachi death (uhh... desk)star
NIC card: $10.00 for a Dlink
Well... that's it folks... you can slam out a POS worthy of internet usage and maybe a little more. Hell, it also makes a decent file server if speed isn't your goal in life.
Of course, it may cost you a little more if you want something besides your ancient copy of Win98 or Linux on there... but it's all up to you.