That program is based on the fact that NT systems don't store the password with a salt value. That company claims that its program is "the first of its kind for NT", but I'd be very surprised if that was true. Not using salt in a hashed password is just stupid, as these guys demonstrated.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

Note: All code is untested, unless otherwise stated