Facebook Feed on Wordpress site

Hi guys.
I’m so confused, it seems there have been changes to how you intergrate a facebook feed into a website in the past year and I can’t figure out how to do it.

What I’d like is a like button, recent status updates and facepile for a business page, just like on this website: http://www.mommefit.ca.

What’s the best way to do this? I’ve tried a plugin called “Facebook Social Plugin Widgets” by Christopher Davis but its not working. I’ve also tried the facebook developers page and tried iframe and xfbml but nothing is working.
Do I need to apply for an app or something? I don’t mind coding directly into my .php files or using a plugin.

Thanks for your help.

Ok here’s the solution, you just need to put this script with your own facebook page URL:

<script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script>
                    <fb:like-box href="http://www.facebook.com/pagename?v=wall" height= "700" width="400"></fb:like-box>