Authlogic-facebook connect

Hi all,

Consider the application using authlogic plugin for simple signup and

signup process:
i have registered one user using some email like “[email protected]” in my

Login process
And in login page , …if i am using the same email id
[email protected]” to
login thro facebook connect option .

Getting two record separate in user table for signup and login in my
and my requirement is

i Need to update the existing record ,when i login thro faceboook

If anyone knows the solution???