I've got all the pieces for it, but I don't know what to do with it. It gives me access to that island, but how?

[edit]Never mind Someone explained to me over msn =)

Could you let us know? I'd like to know as well...

: When you have all the pieces in your inventory, go to Games and scroll all the way to the bottom and click on Treasure Maps. Click Unknown Island and then turn your pieces in :)

There's a little delay, but after a while you'll be able to click the island near the Fairgrounds to go to Unknown Island.