fedora 7 yum.conf question

I recently installed fedora 7.  The first thing I noticed was that many of
my web pages didn't work because I didn't have adobe flash player plugin for
firefox.  I tried to install the adobe flash plugin using yum but it didn't
work.  I queried the yum faq at duke and fedora to understand what the issue
was.  If I understand it correctly, I'm supposed to have an /etc/yum.conf
file.  I don't.  All I have in my /etc/yum dir is the following:
pluginconf.d and yum-updatesd.conf.  Do I need to manually create
yum.conffrom scratch?

Thanks,

yum newbie.

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