So sorry, you can lock this because I figured it out.

Go to the games page and click on the Treasure Maps game, or whichever it's called lol. :)

[edit]

Also, you have to have all of the pieces to a certain map in your inventory before you can do it, though. You can't stick them in one at a time, I don't believe. ^_^

You can assemble it by going to games and clicking on the treasure map link.