First of all, I'm using XP Professional and Excel 2002. (Sorry.) I'm working on a file someone else made. The column "C" is missing. I've tried unhiding it but the usual method doesn't work. I looked it up in Help. Is there some other way to hide a column or can the letter names at the top of columns, (i.e. "C") be changed? Does anyone know how to undo this? Thank you in advance for any help you can give.