Window Blind / Skinstudio

Hi people!

I've tried to change the background of windows in explorer.

In SkinStudio i have tried to change the bmp for explorer background,

but this had no effect. i only can change the COLOR of the window

background.

Is it not possible to change the background of windows in explorer?

Please let me know because i'm trying this hard for about 2 hours :rant:

thx, have a nice sunday!