had the same problem myself- see this page on the EndNote website.

http://www.endnote.com/support/faqs/...1.asp#winEN567

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Benny
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"Endnote 5 & office 2003"
wrote in message ...
After upgrading my office to office 2003, endnote 5 commands (software for
writing refrences) don't appear on word 2003 tools menu.