I have a Dell Dimension mid-tower PC (no monitor) removed from office use.  2.4 Ghz Intel Celeron CPU, 256M RAM, 40G HD CDR.  Works well.  HDs were DOD erased and I have installed Crunch Bang Linux bu includes WIndows XP Pro license and install discs.  Runs Linux great, and Windows like a 7 year old computer :)  [email protected]