Themes are an integral part of every Windows operating system but with Windows 7 it just got better. You have the freedom to create a slide show without using any 3rd party applications. You can also use your personal images or Windows default images to create your own personalized theme.

Using your own pictures

1. Search for the images that you want to include in your personal slide show. You should place all the in the same folder before you begin.
2. Open Control Panel, find desktop background, and then click Change desktop background.
3. Now you have to click the Picture location list to view all categories. You can also browse to search your PC for your personal images.
4. You have to then select the check box for all pictures you want to include in your own slideshow.
5. By default, all images in a particular folder will be selected and will be part of the slide show. You can however customize it by doing the following:
a. Remove the check from the check box for every image that you don’t want in the slide show.
b. You can also press the Ctrl key, and then select every image that you want to remove. Only the checked images will appear in the slide show.
6. If you want to create a slide show of images on your desktop, you have to select more than one image. If you want to set a single image as your desktop background then you have to select only 1 image. You can also do the any of the following steps according to your visual need.
a. You can click an option in the Picture position list to crop the images either to fill the Desktop, fit the desktop, stretch to fit the desktop, tile the images, or even center the pictures on the Desktop.
b. You can also click an option in the Change picture every list to set the time interval between two changing images.
c. Depending on your requirement you can select the Shuffle check box to have the images appear randomly.
d. After you are done you have to save the changes.

Using Windows default pictures for Theme

1. Open Control Panel and then click Personalization.
2. Here you can select a theme under Aero Themes, and then apply it to the desktop. All Aero themes include a desktop background slide show except the Windows 7 default theme.
3. You can change the theme’s default slide show images or settings.
4. You have to select Desktop Background and then put a check on the check box for every image that you want to include.
5. By default, all images that are already a part of theme will also be a part of the slideshow. You can however add pictures from other themes by following steps:
a. Select the picture that you want to be a part of your slide show.
b. You can also press the Ctrl key, and then select every image that you want to remove. Only the checked images will appear in the slide show
6. If you want to create a slide show of images on your desktop, you have to select more than one image. If you want to set a single image as your desktop background then you have to select only 1 image. You can also do the any of the following steps according to your visual need.
a. You can click an option in the Picture position list to crop the images either to fill the Desktop, fit the desktop, stretch to fit the desktop, tile the images, or even center the pictures on the Desktop.
b. You can also click an option in the Change picture every list to set the time interval between two changing images.
c. Depending on your requirement you can select the Shuffle check box to have the images appear randomly.
d. After you are done you have to save the changes.