window blinds and wallpaper

More often than not, the wallpaper shown in the preview of a windowblinds skin is not included in the windowblind skin that you download. If the wallpaper is included in the skin, the author's comments will usually say that it is included. If the wallpaper is uploaded separately, the authors will sometimes give a link to it in their comments.

If neither is the case, click on the [Comments] link below the author's comments and read them to see if a link is provided. If no link is provided, post a comment and ask the author about the wallpaper.

Be aware, that for copyright or other reasons, the author may not always be able to provide you with the wallpaper.
[Message Edited]

There is a setting in WindowBlinds to display the wallpaper if it is included with the skin, but even when a wall is included with the skin it doesn't always apply in my experience at least. Then I go to the specific skin directory in Explorer, find the skin and apply it manually. So it depends on the situation.

But as noted, often the skin is not included. Usually the skinner will mention when it is included with the skin or link to a download site.