NOTE: If any errors occur (such as resource already exists) then CANCEL whatever operation you are doing. It is dangerous messing around with resources and can get you in DEEP ****. Email me the errors and I'll email you a new copy of Lock-Me! which should work.
7. Quit resedit saving changes.
8. Copy the file "Password Prefs" to the System Folder
9. Hit command-shift-0 (command-shift-<zero>)
10. Select "Change Password" (Do not do this with other people around as here the password is shown "as is" not as •'s.
11. Leave the "Old Password" field blank and fill in a password in the "New Password" field.
12. Select "OK".
13. Enter your new password and hit return.
14. You can now lock your computer whenever you want by just hitting "command-shift-0". (command-shift-zero) The "0" is changeable. Read the FAQ about that.