You got someone facebook id and password. If you try to login to that account from your your system, it will ask to answer security question. You can bypass this security.
Requirments:
slave IP address
* Go to http://www.ip2location.com
* and enter the IP address.
* It will show the country of slave.
* Now visit:
* Find the proxy IP address based on the slave's Counry.
* Set the proxy IP in mozilla
* Now login to facebook with id you got. you won't get Security
Question now.