Yes. Start by making a duplicate of the Puzzle, so that after making a
custom Puzzle, you'll still have the original.
1) Put a graphic, one that is about the same size as the Puzzle itself,
on the Clipboard.
Some possible sources:
* a HyperCard or MacPaint bitmap
* a screen dump or other PICT copied using System 7's new TeachText
program.
2) Open the Puzzle, and choose Paste from the Edit menu. The graphic
is copied from the Clipboard into the Puzzle, and scrambled.
(To see the graphic unscrambled, choose Show Clipboard from the
Finder's Edit menu.)