Paulo,
I split your topic from the thread you posted in because what you were asking was not related to that topic at all.
I'd suggest you start reading the Configuration Guide, below, which will take you through the steps of installing and configuring JFBConnect to work how you want it to. Once installed, you'll have a few options for adding the like button (all detailed in the guide):
* A module, which you can place in any template position similar to any other module on your site
* The Content plugin which can automatically add a Like, Comment, or Send button to your articles
* The {JFBCLike} tag which can be placed in any article, module, or template file to allow for a lot of flexibility for where the Like button goes.
JFBConnect Configuration Guide:
www.sourcecoast.com/jfbconnect/docs/configuration-guide
Hope this helps get you started, and let us know if you have any other questions,
Alex