I'm not sure I'd call it trading they're doing... it's more like "Go fetch this item for me! Go find this person! Go get permission first!", that sort of thing.
Too bad I can't post images, otherwise it'd make explaining things so much easier. Oh well.
Starting with the vertical window with the two icons. The first one with the face crying "Help!!" tells you how many Wally Watchers are remaining to be rescued in the level. The second one with the dial is where you can change the sound settings and button controls.
The next window to the right is the current person or item you need to find.
To the right of that are the "equipped" items with which you use during gameplay. What's in it for me right now is the Magic Stick, Gloves, and a Lollipop (which they name "Red Candy").
The long horizontal window with the rotating presents is where the presents for Wenda's birthday party are kept. So far I've got Wenda's favourite flower and a stone axe.
The small window at the bottom with the question mark coming out of a box is where the contents of the presents are shown when you select one.
And lastly the window beside that is where all the written info is displayed.
Hope that makes things a little more clear.
