Turn of Cakephp Auth password hashing.

I am upgrading a cakephp app at my new job from l.1 to 1.2. I am replacing the homegrown 1.1 authorization code with the great Auth component. The problem is that the passwords are not hashed in the legacy DB. How can I turn off the password hashing temporarily so I can start using the Auth component.

Don't worry, I will hash the passwords and change this later.