Guys,
If you have a administrator account then why you need such softwares...
Just right click My computer => Manager => Under Computer Management (Local) select Local Users and Groups = > Users
1) If you want to hack someone password do the following instructions:
Then select any user name which you want to change the password => Right click => Set Password..... (Click Proceed button)
Finally enter your new password and confirm the password.
Congratulation!!!!!
Just now you hack someone password.....

2) If you want to delete others user account(s) then just select the user and then Right click => Delete