Try this: http://fedoranews.org/krishnan/tips/tip024.shtml
If you dont want to go to the URL, here it is: In order to use the flashplayer plugin with Mozilla in Fedora Core 1, Install the package "compat-libstdc++" via 'apt-get install compat-libstdc++' (if you have apt ofcourse) or from the Fedora Core 1 installation CD3. Then make sure you have libflashplayer.so and flashplayer.xpt in the correct mozilla directory. - submitted by Fernando Castellano.
Hope it helps, greetings
