We are trying to set up a single sign-on solution and I was asked if there is another field we can use in Active Directory for login Authentication. Basically they want a user to be given two different ways they can log into the AD domain. We currently log in with First Initial Last name and the password. They want to also use firstname.lastname. So use either JDOE or John.Doe as the user name for the same account. Is that possible in Active Directory?