I am working on a computer that has Office 97 installed from on it from the CD. (You'll have to think back now - Office 97 was a long time ago in computer years

.) If I wish to add or remove an individual component, I insert the CD and double click on the "setup.exe" file. A menu of options then appears onscreen (Add/Remove, Reinstall, Uninstall All, etc.)
I had the CD-ROM in the drive when I accidentally pressed "Reinstall." I cancelled the process and received the message that "Setup was stopped before any files modified."
Now, however, whenever I insert the CD to install or remove a component, it starts right at the beginning to install Office 97 from scratch. It prompts me for my name and organization, CD code, install location, etc. It then generates a new Product serial number.
At this point, I exit setup because I don't want to mess up my current Office programs. But I can't figure out how to get the CD (namely setup.exe) to behave as it did before (where it gave me menu options for my existing Office 97 installation). Instead, it behaves as if Office 97 is not installed at all.
Does anyone know how to remedy this?