Actually I've found how to do it manually if you had made em earlier in Windows 2000/98.
Use xcopy /a to copy an existing Folder Settings and desktop.ini. You would then rename the image file to Background.jpg and xcopy that into the Folder Settings of the directory where you want the picture to show up as the background. If you need to change the color of the text in that folder, then you will have to edit the desktop.ini within that folder.
One side effect I've found so far is that if you make a shortcut to that directory, sometimes it doesn't show up. But if you are navigating through the explorer (i.e. My Computer, C:, My Cool Folder, etc) it will always show up.