When done, it should look like:
<?php echo $fbHtml;?>
or {JFBCLogin}You don't need the php tags around our stuff. You can use our easy-tags ({JFBCLogin}, {JFBCLike}, etc) anywhere in a template, article, or whatever else will be displayed to the user. No PHP knowledge required. JFBConnect will scan the page for those tags and replace them with the proper HTML tags.
Hope that helps!
Alex