Upload your desired Wallpaper in your member area at "File management" and copy/remember the address of that directory where your pictures are located. The directory address is at the bottom of the "File management". For example -> http://www.beep.com/files/imagename.jpg

Now click in your member area the point "Design". After having chosen an adjustable design in the category “Beep template”, it will be displayed under “Your present template”. Down under “Your present template” click on "Adjustment: (Wallpapers & text colors) " You cannot click this link? -> That means that you have  probably chosen an "older Beep design" where Adjustment is not possible/not necessary and no own wallpaper can be used.  In this case, please choose a newer website template.

After clicking on this link, you can freely choose a wallpaper for any frame area (i.e  structuring your site in several parts). To create your own background image, you enter the appropriate image address (keep the address in mind) in the field "Address to your own wallpaper".

And you are done!

To enter separate background images in the different subpages, the following code must be used:

<style type="text/css">
body {
background-image: url("http://www.beep.com/files/imagename.jpg")
}
</style>

This is how to insert CSS-Code and other script texts correctly.