A much better way of doing this is to copy the SAM file
onto the disk, then run l0phtcrack
on it to actually find out the password
. I have done this many times and it works a treat!
If NT is running on a NTFS
filesystem and not FAT, you'll also have to put a program called NTFS2DOS
on the boot disk and run it. This will allow you to access the SAM file from DOS