I suspect that you have your worksheets grouped. Right click on one of
the Worksheet Tabs and click "Ungroup Sheets"

Cheers,
Jason Lepack

Joye wrote:
I have recently switched from Office 2000 to office 2003. I have a workbook
with several pages. When I enter a value at b2 on sheet one, excel also
changes to the same value at b2 on on the other sheets.