Are you insane?
CPU - A4 Llano - as low as 65 bucks
Mobo - Biostar or AssRock ( I couldnt resist ) FM1 mobo, those go for as low as 60 bucks
RAM - 2 or 4gigs of 1600 RAM (Cheapest) these go for 15 to 20 bucks
250 or 320 gig 5400 RPM drive, (50$) or salvage the old one for free.
Case: cheap 40 dollar case, something like this :
http://www.newegg.com/Product/Produc...82E16811154062
Optical drive :
>2011
>Optical Media
either that or an lg burner for 15 dollars.
8gb USB drive for your OS, so you can install it.
Well, pretty much that is it, What's that down to now, 200 dollars?