How to get a pointer to the customize button that belongs to the CMFCRibbonBar in Visual Studio 2010?

Or, what I really need is to change the tooltip message for the CMFCRibbonQuickAccessCustomizeButton, so please enlighten me if you know any other way to do this than calling its SetToolTipText method. I guess it should be possible by overriding PreTranslateMessage, but I do not know how to identify that particular message. I was only able to change the tooltip message when the button is pressed, but then of course it's too late.