There was no released cms/module from PHPNuke, it has been promised, several times by different people, but never released. There's one fully operational right now, but the author promised it would be out within two weeks, and then has disappeared for the last 2 months, never to be heard from. Fustrating to say the least, as it sort of merged nuke and VB together, and fixed a few of the problems as well.
Either PHPNuke or PostNuke, though PostNuke has a different setup. It's a race to see which one gets released.