Hi Liz,
So you have the mysterious paper and the CD. You'll notice that the mysterious paper has letters spaced all around the outside circle, and that the CD is imprinted with symbols.
Look at top right of the mechanical valve system. You'll see a window displaying one symbol and one letter.
Place your CD inside the circle on the paper, and note where on the CD you see the symbol that is displayed on the mechanical puzzle.
Now rotate the CD until that symbol aligns directly next to the letter on the paper that matches the letter displayed at top right of the mechanical puzzle.
The wheel is now set.
Look at the boxes to the left of the red valves on the mechanical puzzle. You'll see a letter. Find it on the paper. Note which symbol is now next to it. Rotate the valve until you come to that symbol.
When you think you have it, press the button and a bulb will light up.
You'll get a new set of letters/symbols at top right.
Repeat until all bulbs are lit.