1. Bottom inside up.
2. Security chip in bottom.
3. Metal guard over bottom.
4. Disk in bottom.
5. Spring in bottom; clip on metal guard.
6. Top on bottom.
7. Hold together and fasten screws.
Now, back to reformatting. I'm going to a friend's place where I know everything works. F*CK Kinko's. BTW, if you put an unformatted or unreadable Zip disk into a Mac at Kinko's, you can reformat it, including DOS, without logging in!