I have an old compaq and an old IBM collecting dust...They both work, the compaq's battery doesnt hold a charge anymore but i do have the power cord, the IBM works great still and holds a charge but for only an hour or two.
both are close to 400mhz, 64mb of ram and 4-6gig HD's or something very similar. I can get you more details later when I get home from work if you want...LMK