Green Background in Win 8 Install

[beatmaster]

Hi one question about Win8 Install and the green Background.

How can i replace this with my own image ?

i have edit the spwizimg.dll, the shsx.dll in install.wim.

Also i have edit the background and setup image in boot.wim (also in the oobe directory).

Now i can't find the file with this green background.

Can me help ?

Mike