The computer has become a necessity of life. We use it every day, in office and at home, and we cannot imagine our lives without it. When I wake up, the first thing I do after I brush my teeth is switch on my computer and read the mail. And I guess so do you. In the middle of the day I use a computer to do my job like the majority of office workers. And in the evening, after I finish my job, I use my computer to relax: watch a new movie or play a game. This is how our lives go these days. Because we use computers so often, it would be boring, if they showed us the same screen all the time. That's why almost all operating systems allow changing the look of computer desktop. For example, in Microsoft Windows, which is the most popular operating system in the world, you can change skins, color themes, and desktop wallpapers. Desktop wallpaper is an image, which is being showed as background on Windows desktop. Windows has many nice built-in background images that you can use. If they are not enough for you, you can add your own wallpapers. But where can you get them from? The easiest way of obtaining a wallpaper is to download it from the Internet. There are a lot of websites where you can download wallpapers for free. There is a wide choice of designs, screen resolutions and image formats. Even if you have non-standard screen resolution, you will be able to find a suitable wallpaper without a problem. If you don't like wallpapers made by others, you can make one yourself. It is easy. You don't have to be a professional artist or designer to make a wallpaper. Everyone who has a digital camera can do this; just make a nice photo that you will be pleased to see and put it on your desktop.