After messing around with a software program called Virtual Drive my CD-ROM is now reported by My Computer and Explorer as a removable drive with its own special icon. Any attempt to use a CD now generates a "Disk not formatted error". However, Control Panel\System reports my normal CDROM driver running without problems.
I've tried: changing drive letters, removing driver in System and reinstalling. Editing all references to CDROM out of Registry and reinstalling. Reinstalling Windows over top of existing set up. Removing CDROM physically, removing it from BIOS and System and reinstalling.
Any help appreciated.