Take a screen shot of your friend's computer's desktop. Then open a graphics program and select 'paste'. This will create an image of the victim's desktop. Save this file into the c:\windows\ directory as a bitmap(bmp) and set it as the desktop background. Then simply remove the icons from the desktop (either place them in a folder or on some machines you can select "hide all desktop content"). When the site down at their computer none of the icons will work!