When I open a new instance of Excel 2007, Auto-calculate is set to ON. I then turn this option off, close Excel only to find that upon re-opening Excel, Auto-calculate is again set to ON. Strangely, when I make this modification in a fresh instance of Excel 2007, I am asked to save the workbook, 'Book1.xls'.

Seems like there is a file or a setting somewhere on the system that needs to be modified to allow me to turn off Auto-calculate. Where can I find this file/setting?

O/S: XP Professional SP2

Thanks!

- Luis