This is a photo of a Microwaved DVD-R from Wikimedia Commons. I've just resized it, got rid of some gradient in the background and made it the right aspect ratio.
In this version, the DVD is not quite on centre because I wanted it to look right with a toolbar at the top of the screen. This isn't a very big discrepancy, but it is easily fixable in any image editor. If anyone is interested in trying to change the background colour, I can provide the Gimp XCF with separate layers.
Original is here: http://commons.wikimedia.org/wiki/Image:Microwaved-DVD.jpg