This is absolutely one of the best free tools to reset the administrator password and gain access . It modifies the encrypted password in the registry’s SAM file allowing you access to the account in Windows NT/2000/XP/2003/Vista systems. There is an image file to create a bootable floppy disk or bootable CD to modify the admin password and access NTFS partitions. You do not need to know the old password to set a new one. It will also offer to unlock disabled or locked user accounts (a very helpful feature). The program was just updated on April 9, 2007 to include Vista support.
Visit the site by clicking on the link below to download a CD image or floppy image of this program.