Comments:

Note: I suggest you have at least 6 or 7 people minimum. However we did do it on 104 with 5 but it was very hard. Just place at least 1 person in each screen, kill the fairies and when the person in vale screen sees the node he broadcasts immediately and everyone stops what your doing and runs there because it's only up for a short time.

Update!:

The spawn rate at which monsters will appear has been maximized as of Summer 2010, one of the changes done by the new/old development team.