What are you talking about? Are you trying to crack the passwords for your computer? If that's the case, you need to get the SAM file from C:\WINDOWS\system32\config\SAM but you can't be running windows when you get this file, so you have to boot to DOS with a floppy that has NTFS (search on google for that program), and then copy the SAM file to your floppy, reboot to windows and use lc3 to crack the file. Get lc3 from http://www.l0pht.com (that's a zero, not a capital o). If that's not what you are talking about, well, then I have no clue what you are talking about.
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