You don't type anything into the header.
I provided macros. You choose which one you want to use and run it.
If you're not familiar with VBA and macros, see David McRitchie's site for
more on "getting started".
http://www.mvps.org/dmcritchie/excel/getstarted.htm
or Ron de De Bruin's site on where to store macros.
http://www.rondebruin.nl/code.htm
In the meantime..........
First...create a backup copy of your original workbook.
To create a General Module, hit ALT + F11 to open the Visual Basic Editor.
Hit CRTL + r to open Project Explorer.
Find your workbook/project and select it.
Right-click and Insert>Module. Paste the code in there. Save the
workbook and hit ALT + Q to return to your workbook.
Run or edit the macro by going to Tool>Macro>Macros.
You can also assign this macro to a button or a shortcut key combo.
Gord