The password is written in the file
Try to do the following, I am not sure if it will work but it’s worth the try since there is no other solution in the site or the forum.
Boot another linux live CD.
Create /Database directory
Mount /dev/hda3 to /mnt (it should already exist)
Mount /mnt/_DB.00x to /Database
Now edit the file mentioned above, umount and reboot without the CD.
Tell us if it works to include it in a tutorial.