Activate a ribbon tab in Word 2010

[KenWK]

Happy New Year All,

Brand new to Office 2010 and I've found references all over the place for the "ActivateTab" command which acts on an iRibbonUI object, but I can't for the life of me figure out how to assign my iRibbonUI to the ribbon in MS Word. Here Microsoft shows just this:

Public myRibbon As IRibbonUI 
Sub tabActivate(ByVal control As IRibbonControl) 
   myRibbon.ActivateTabMso (control.ID) 
End Sub

But I don't know how to get the object to pass in to the subroutine.

I hoped it was as easy as:

Dim MyRibbon as iRibbonUI
Set MyRibbonUI = Application.Ribbon
MyRibbonUI.ActivateTab("Add-Ins")

But alas, simplicty is not to be.

Thanks for any hints at all.

Best,
Ken