If you are using Log-on studio there is a work around that you can use if you want to use a certain backround as a log-on.
This is no way the proper way to do it, but it works..
First, choose a working log-on that has everything set up the way you want it..ie: Log-on box, messages, etc,,etc,,
Then choose the wallpaper you want to use, You may have to do a little editing to the image for it to be accepted by windows.
The image has to be a BMP
Has to be indexed at 16 color -4 bit
And has to be 72 dpi
After you have all of that arranged open up Logon Studio, choose the Logon that is set-up how you want it to be set up on your image. Click *Edit on the left side, then click the image in the preview window, this will open up the backround editor on the right hand side of logon studio.
At the top of the list it's labeled "picture" and there is a "browse" button at the very end of the top row, click the browse button, browse to your image and choose it.
What happens is your image will overlay the original image, and it will always show the original image in the start-up preview window of logon studio, but your image will be displayed at log-on.
Click save, here you may get a "Run-time 53" error and Log-on studio will close, just reopen it, scroll through the list to the log-on that you used, click apply,,
And there you are..
It's a hack,
It is by no means proper,
And it might piss off the artist who's work you are covering up!
But it works
Zero.