[TomorrowsGaming]

Well, not exactly like that webpage you gave us but something similar you could do is this.

* Write and post the article inside your forum NOT the CMS.
* "Now Promote The Forum Post as an Article" (look at the bottom of the post)
* Turn off Comments if you want and Play around with the settings..

This way it will display something like this,



PS: using the search under the 'Language & Phase manager' you could also edit that text "this article was originally posted xxxx" to something like "To comment please visit here:"

try it..