This isnt a tweak, but a great little feature! For a great way to put your digital photos to work, try creating a slide show presentation for use as a screen saver. Here’s how:
1. Right-click an empty spot on your desktop and then click Properties.
2. Click the Screen Saver tab.
3. In the Screen saver list, click My Pictures Slideshow.
4. Click Settings to make any adjustments, such as how often the pictures should change, what size they should be, and whether you’ll use transition effects between pictures, and then click OK.
Now your screen saver is a random display of the pictures taken from your My Pictures folder.

System restore is such kind of operating system which become your computer more faster and reliable. Sometime as you can see your computer don’t work well and getting slow. This sort of problem you can face for various reason such as - install more software, attack virus, temp file and so on. When you face this type of problem then if you take a system restore then you will get good performance from your computer.