How does RefWorks work?
EndNote and company, which work via a plug-in, are all broken because
the plug-in that provided a toolbar and auto-formatted the citations
depended on VBA, which is gone in Office 2008. The workaround there is
to just drag and drop/copy and paste the raw citations directly from an
EndNote library into a Word doc, and then either return to Word 2004 or
use the "Scan RTF" approach to get the citations formatted. Actually,
wait--Bookends, which is mac-only and very nimble, I believe already has
an AppleScript-based plug-in for Word 2008 operating.
If "Write-n-Cite" is a plug-in you install, it's probably not going to
work. I'd assume RefWorks would have a statement on MacOffice 2008
compatibility up somewhere.
Incidentally, the citation manager in Word is not especially planned to
kill the EndNote, etc market, or not anytime soon--the WinWord people
know it isn't as powerful and basically said on a blog somewhere that
this feature is aimed at students, not academics, and that they are
leaving it up to third-parties to increase the power.