how to add macro button on the ribbon

[kowalsky]

hi all,

I had to perform some formatting in an Excel 2007 workbook and I decided to write a macro. It works just fine, only that my users will never execute it unless they finde a nice button somewhere on the ribbon.

 

Does anybody know how to do that?

 

I run Office 2007 on XP Professional SP3.

 

Thanks,

kowalsky