I have this old computer that my sister deleted something in it that made windows stop working.  the only thing it will run is start-up dos.  can you help me figure out what i can do to make it better?  i mean, it's still ok.  it still turns on and stuff, but i can't access windows and when i type "win" at the dos prompt it just says "bad command or file name".  danke schon,

karen