Via Academic Productivity, I’ve been looking for this forever:
BibTex4Word is an add-in for Microsoft Word that allows the citation of references from a BibTex database. BibTex4Word will insert a bibliography into your document using your choice formatting style.
It is intended for three types of user:
1. LateX users who need to use Microsoft Word. BibTex4Word allows you to use your existing BibTex database and favourite bibliography style.
2. Word users who can’t afford a commercial bibliography package but need to insert citations and bibliographies into their documents. Everything you need to manage references is available free.
3. Word users who have a commercial bibliography package but who don’t like it. BibTex4Word is lightweight, transparent and doesn’t mess up your documents. It is also free.
I’m completely married to Bibdesk as my reference manager, but the lack of Word integration has always caused headaches. I’m very excited to have found an answer.
Update: Not a trivial install.