Yes, you can create a personalized pictures screen saver by displaying selected pictures as a slide show when your windows 7 computer is idle. Follow the procedure below to create a custom screen saver which displays you own images.
1. Right click on the empty area of the desktop and select Personalize
2. This will open up Personalization Windows, now click screensaver as highlighted in the image below.
3. Under screen saver setting, select the screen saver Photos
By default it will take the pictures from your profile Pictures folder, or else click settings button to specify a different folder of images for pictures slideshow of the screen saver.
Browse the folder containing images, and moreover you can select the screensaver speed and optionally select to shuffle pictures.