We have created an ADD-IN which gives an additional Menu (on Right Click) when a word is selected within
WORD
EXCEL &
Internet Explorer

It works for XP/2000 and Office 2000/2003 and IE 6.0/70

But when we install for VISTA and Office 2007 it does not work . I have a feeling that problem may not be for Office 2007 as its not working for Internet Explorer under VISTA

Hope to get an answer soon.