The plugin openvrml-mozilla-plugin-0.17.6-2.fc8 does not seem to work in Firefox
2.0.0.15 in Fedora 8. The failure is best described in comment #21 to Bugzilla
Bug 212715:

    After installing "openvrml-mozilla-plugin" and restarting firefox, firefox
doesn't show the plugin in "about:plugins", nor does seem to know how to handle
*.wrl files.

Another comment gives some background detail:

    This may be the result of the recent change that added -fvisibility=hidden
when compiling. This works on F9; but possibly the firefox/xulrunner headers on
F8 don't specify the symbol visibility for symbols that require external linkage.

The command "nm -D /usr/lib/mozilla/plugins/openvrml.so | grep NP_" produces no
output; therefore, the plugin exposes no entrypoints.