Integrate "Login with facebook" in the "Registration" + IE problems

Hello,

I have some question and need please a step by step:

1/ How to integrate "Login with facebook" button in the "Register for this site" of the Sclogin ? (I think its the main registration Joomla function no jomsocial)
2/ after "1/" to change "Login with facebook" button by "Register with facebook"
3/ Why all my user receive this message when they use Internet explorer or opera mini

"Forbidden
You don't have permission to access /components/com_jfbconnect/assets/jfbcchannel.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Thanks a lot in advance and thanks for this useful tools JFB

Thanks a lot for quick reply :

1/ It's not Working in my : public_html/templates/yoo_revista/html/com_users/registration

I have that :

<?php
/**
* @package yoo_revista
* @author YOOtheme www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license YOOtheme Proprietary Use License (www.yootheme.com/license)
*/

// include config and layout
$base = dirname(dirname(dirname(__FILE__)));
include($base.'/config.php');
include($warp->path('layouts:'.preg_replace('/'.preg_quote($base, '/').'/', '', __FILE__, 1)));

AndI try to Put in each line "{JFBCLogin} " but every time the result is a white page instead of the normal registration form !!!!!

2/ I not try Yet

3/ I change autorisation from 755 to 777 of the
/public_html/components/com_jfbconnect
and
/public_html/components/com_jfbconnect/assets/jfbcchannel.php

But still not work !!!!!!

Thanks a lot in advance for your help

P.S : Even, {JFBCLogin} don't work inside "K2 article/item : all plugins are "on" except the kunena one !!!