Change Login Screen in Fedora 14

Code:

su
(provide the root password)

cp /usr/share/backgrounds/laughlin/default/wide/laughlin.png /usr/share/backgrounds/laughlin/default/wide/laughlin.png.original

cp /usr/share/backgrounds/laughlin/default/standard/laughlin.png /usr/share/backgrounds/laughlin/default/standard/laughlin.png.original

cp /usr/share/backgrounds/laughlin/default/normalish/laughlin.png /usr/share/backgrounds/laughlin/default/normalish/laughlin.png.original

cp /current/file/location/filename1.png /usr/share/backgrounds/laughlin/default/wide/laughlin.png

cp /current/file/location/filename2.png /usr/share/backgrounds/laughlin/default/standard/laughlin.png

cp /current/file/location/filename3.png /usr/share/backgrounds/laughlin/default/normalish/laughlin.png

Note: filename1,filename2,filename3 can be a single file or different files with different dimensions according to the requirement.