sorry, not gonna email anybody who's addy includes '@OPTONLINE(dot)NET'
go the the folder with the wallpapers you downloaded - right click on one you no longer want and choose delete. go back to your desktop and right click on your recycle bin and choose 'empty recycle bin' - go back to your folder with the wallpapers and repeat.
or if you have a cd burner then copy the walls to a disk.