Excel 2007 : Show column width label when manually adjusting

I have just moved over to Excel 2007 (from 2003) and need help please.

When I manually adjust the column width, or row height, the very useful label showing the width value doesn't appear.

I've gone through the options but can't find where the control is for this function. Can someone please tell me how to turn this back on. I would like to know the width value without having to go to the Column Width... option.

Cheers, Richard.