Not a Vista issue. It sounds like your boss doesn't have Word set as the
email editor.

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Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
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Real World Questions, Real World Answers
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> I have one user who is not getting the option to change signatures
> when he right clicks his signature in a new mail or a reply - instead,
[quoted text clipped - 5 lines]
> enforced corporate signatures and I want to deal with these little
> glitches before they come back to bite me.