I would like to be able to choose which scenes run in the background of my Aero Desktop. I am able to do it on my office machine and another machine here at home. However on this box, all I get is the option to choose solid colors. Weird. It ignores the fact that the pull down box shows Windows Desktop Backgrounds. How do I fix this problem? I want to disable/uncheck some of the screens that are part of a particular package. Thanks