Hi everyone. I'm very new in Excel 2007 UI.
I'm about to create a worksheet with a customized tab/ribbon, so I referred
to this link:
http://msdn.microsoft.com/en-us/library/aa338205.aspx
and followed the steps described at the part, "Modifying Office XML Formats
Files to Customize the Ribbon User Interface".
But "My Tab" did not appear from the Ribbon UI.
Did I miss doing anything?

Thanks in advance! :)