Forum:Hidden Basement Help

I'm trying to get into the Hidden Basement in New Haven. I'm in the "Another Piece of the Puzzle" quest, I haven't completed any of it yet, I go and stand by the door of the blue hut ... and nothing happens. I'm playing on an Xbox 360.

Also, how do you access the Zombie Island DLC? It doesn't show up in any menu, though it's on the Xbox.

Thanks!