Updating Downloaded Templates
 

I just downloaded " Operating Expense Budget" template & it opened in Exel.
Im using 2003. At the bottom it has 3 tabs Source Date, Pivot Table Report &
Pivot Chart Report. I need to change these #'s to reflect my own but it will
not allow me to. When I try it says "Cannot changethis part of a Pivot Table
report".
Please advise me how to utilize this template so that I can get started on
my next biz venture.
Thanks