I am not sure if this is possible, but I would like to know if I can apply
additional information in a single cell.  For example, I am creating a list
of books for a library and I would like to add information to the title of a
book.  If a person takes their mouse and hovers over the title, I want them
to see a description content of the book.  Can this be done?

I am using Microsoft Office 2003.

Thank you,
Judy