GPG KEY

[cfk]

Gentlemen:

 One one of my computers, I am thwarted in running "yum upgrade" as a package 
"gthumb" wants a GPG KEY I do not have.

 In searching archives, I find two different methods to get such a key and one 
source says try "rpm --import/usr/share/rhn/RPM-GPG-KEY which doesnt work.

 Another source is http://www.fedoralegacy.com/docs/yums-rh9.php. This appears 
to be for RH9, it says try "rpm --import 
http://www.fedoralegacy.org/FEDORA-LEGACY-GPG-KEY", but I am reticient to try 
it on my main fedora core 2 system.

 Would someone be willing to share with me the arcane incantation necessary to 
cause the "eye of noot" to make the broth come to a boil?

Charles