Thought I would jump in here. It is really quite simple,
1. Below the design window, there are 4 tabs... (booklet Front, Booklet Rear, Inlay, CD Label) choose one you want.
2. On the toolbar above, In the Paper selector choose the appropriate stock. (Hint. You can choose different stock for each tab, A very cool feature. )
3. Choose Print and you will see the different choices.
thats' all there is too it.