1024*768 or 800*600
 
Windows Installation
Choose the image size you want to install according to your screen resolution. You can check your screen resolution by clicking on the right button of your mouse on your desktop and by selecting the Properties menu; a Display Properties dialog box will appear. Then, select the Settings tab and check the resolution in your Desktop Area. After clicking on the image will appear in your browser. Just click on the image with the right button of your mouse and choose Set as Wallpaper or Set as Background depending on your version of Windows.