mozilla-firebird bookmarks import: howto ?

["James D. Freels" <freelsjd@ornl.gov>]

I have an html file containing collected bookmarks from opera.  I want
to import them into mozilla-firebird.  I use manage
bookmarks->import->opera6.html.  However, they do not appear and are not
saved.  I can view the opera6.html file just fine within the browser.
-- 
James D. Freels, Ph.D.
Oak Ridge National Laboratory
freelsjd@ornl.gov