User blog comment:Lord Loss/Monster Hunter Portable 3rd on the PS3/@comment-76.240.33.215-20110526020648/@comment-3426677-20110526033246

It has only been announced that it supports AHP, not how it works. So no one really knows at the moment. I'm guessing it should have something integrated in game that when you select online gathering hall, AHP will launch letting you make or join rooms. I'm guessing here though.