You mean a custom status message to the user's Facebook wall? JFBConnect already has the ability to post a message to the user's wall, but it's a 'fixed' message and not customized to that user.
There's a few options if you want to tailor that message. I can tell you where we post the static message and you can change the code there to make it dynamic in some way. Alternatively, you can implement your own functionality and use the Wall Post feature, as described below, to setup your own post entirely:
www.sourcecoast.com/jfbconnect/docs/deve.../facebook-wall-posts
Let me know if you need more help guidance, and we'll do what we can.
Thanks,
Alex