Some trial-and-error and research revealed the answer.
- Back up your registry using these instructions.
- Go to Start and in the search box, type regedit
- This will display the regedit program at the top of the Start dialog box.
- Right-click on the regedit link and choose "Run as Administrator."
- In regedit, go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and create a new DWORD (32-bit) Value.
- Name the value NoDispScrSavPage
- Set the value to 0 (zero).
- Close the registry editor.
- Reboot your system.
Update: One more step: You also need to follow the steps described here, as recommended by Ted Myers on the Windows Secrets Lounge. Finally, I have my screensaver back :)