Unlink register/login from Q&A and use another plugin for login

Hello guys,

Is there a way to hide the answer box and "ask a question" page if a user is not logged in?

Basically I want to separate out register/login functionality from Q&A and use another plugin that will allow Wordpress as well as Facebook login.

I'm planning to use WP-FB autoconnect plugin.

Instead of the answer form and ask a question link, I want to place a message that will prompt the user to login.

Any ideas about how this can be achieved? Any and all of your suggestions will be highly appreciated.

Thanks!
Sonal