Over the next few months you find find a great collection of Desktops / Wallpaper for your PC.
(You will find images suitable for both'Standard 4:3 Ratio monitors along with the new 16:10 Widescreen Monitors).
If you are using Windows: Simply click on the desired size of your desktop. You will see a new window open with the image you have selected. Now just 'Right Click' with your mouse on the image and then choose the option on the menu 'Set as Background'. Thats it! You can now admire your new desktop!