How can you make your won themes. I have a group of phots I would like to use but Windows Help doesnt show any answers .Is this possible and how ?

Right click on the desktop and choose 'Personalize'. Then at the bottom of the screen will be 'background image'. You can choose one or many and it will cycle through them (there's a setting for how long, and shuffle). At the top of the personalize screen, above the aero themes, is an option to 'save theme'.