Evidently, from URL:

http://nspluginwrapper.org/why.html

nspluginwrapper is currently the only means to run a plugin in a browser 
of a different architecture. It is most commonly used to run a 32-bit 
plugin built for x86 in a 64-bit browser built for x86-64

End quote

and thus appears to address the issue I have raised in a different 
thread.  I have found:

nspluginwrapper-1.4.4-1.el6_3.x86_64.rpm - A compatibility layer for 
Netscape 4 plugins

Does anyone have experience with this adaptation layer compatibility 
insert?  If so, good, bad, and is it reliable?

Yasha Karant