You might try disabling 32-bit disk access from the control panel. Your system will probably slow down a bit, but if your CD drive starts working then you will know that it is apparently not compatible with Win3.1's 32-bit disk access. I don't remember exactly how to get there, but I believe that you go to Main - Control Panel - 386 Enhanced, then something about virtual memory?... There will be a check box that says "Enable 32-bit disk access" (it is checked by default). Uncheck and reboot.

Good luck.

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Steve Taylor - Service Manager
Altoplanos Information Systems, Inc.
Coeur d'Alene, Idaho USA
www.altoplanos.net