This article is an excerpt from Excel 2007 VBA: Programmer's Reference by John Green, Stephen Bullen, Rob Bovey, and Michael Alexander. Visit Wrox.com to learn more about this book.

One of the biggest changes in Office 2007 is, of course, the Ribbon. Early in the design of the Ribbon, Microsoft realized that there had to be a way for it to be customized by developers and (to a certain extent) end users. That realization led to RibbonX, the Ribbon’s programmability mechanism. This article provides an introduction to RibbonX and explains how you can customize the Ribbon, both for yourself and within your applications.