Hi,
You worte that it is possible to write comment with JFBConnectFacebookHelper Class.
But this Class don't existe. I tried with JFBConnectFacebookLibrary. But it is still not working ( Fatal error: Call to a member function getSetting() on a non-object in XXX/com_jfbconnect/libraries/facebook.php on line 160)
Check this link :
How do I post to a user's wall from other components?
thanks