When you use the { JFBCLogin} tag, it will insert only the Login with Facebook button. It will not insert the whole JFBCLogin module, which includes the Username, Password fields, submit button, register for this site links, etc.
I'm not sure what you mean by "i tried changing the type of the menu button but it wouldnt expand to anything".
Finally, how did you "turn your login program off"? Do you mean you disabled a different login module? When you did this, and used the Login With Facebook button, what happened?
Sorry for the confusion, but we'll get you fixed up. If there's a link you can send to let us see what's happening, we'll gladly help out.
Thanks,
Alex