Go to your Windows/Mac/Linux desktop and take a screen shot for us to see.
For Windows users just go to the Desktop, and press the "Print Screen" button on your keyboard. It should be directly above the insert key. After you do that, open up Paint, click Edit on the top, then click Paste on the drop down menu. Save the file as JPG and upload to your favorite photo hosting service (ImageShack, Photobucket, Flikr, etc).
The background changes on it'* own every 30 minutes.
2004 Chevy Silverado Z71 - 15% tint, FTDRL, All-on-high, 5000k lows/fogs, tinted tails, color matched grille, Sound by Kenwood.