how to use facebook connect..

when i am trying to login with facebook connect option ..just after selection it giving me error message..saying given url is not allowed by the application configuration ..

is app id and app key are same thing..i create one app of fb and i got app id and app secret..no app key..

so i put app id and in app key and secret in secret ....

did i did something wrong ??

It means the site URL you entered on the facebook side with your created the app does not match the url your dolphin site uses.

 yes its working now..it was site url..