using patch

[Eric]

Hi,
I'm new in linux and its scripts. I apologize for my foolish question.
In this mailing list I found this patch
http://bugs.gentoo.org/attachment.cgi?id=102981
for gigaword. But how to use it?
Where should be added this patch?
and another one http://www.netexpertise.eu/en/freeradius/daily-accounting.html.
Where exactly should I set this scripts ?
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