FreebSD 5.3

[Dixit, Viraj]

Folks,

I have accidentally changed the permissions to my directories on my test system. Now I cannot login either on console using root or any other login account. I simply cannot login, the permissions change has done it. I get the login prompt but this is the message I get from the system when I log in. Help !!!!
Thanks,
An Idiot

Here is the message:
login: invalid script: /usr/libexec/login_krb-or-pwd
Login incorrect