Gacked from lizbee:

01: Take a screencap of your desktop.

To cap a desktop:
1) Press "Print Screen" (prt sc) button
2) Open your graphics program-o-choice
3) Press CTRL + V
4) Save image as a JPEG

02: Upload the screen cap to your image server.

Don't have one yet? Use Photobucket. Or Imageshack ( Read more... )