chntpw: chntpw (Change NT Passwords) chntpw: chntpw: View some information and change user passwords in a Windows chntpw: (NT/XP/Vista/win7) etc SAM userdatabase file. You do not need to chntpw: know the old passwords.Ophcrack is a free Windows password cracker chntpw: based on rainbow tables. chntpw: chntpw: Homepage: http://pogostick.net/~pnh/ntpasswd/ chntpw: chntpw: chntpw: