I love it!! It works perfectly (you have to select stretch image) on all 3 computers I've tried it on. A desktop running Windows XP, the laptop running Windows XP with a 15" screen and the laptop running Windows 7 with the 17" screen. If you'd like to snag it to use (or even to pring out smaller to stick on your desk...that's okie dokie by me! If you click on the picture it will take you to the original image. From picasa you can click download and it will pull up the full sized/res image. You can then click the actual image (there will be a little magnifying glass if you hover over it) to make it bigger and right click and save.
To set it as your background is easy peasy. It differs for each operating system, but in general the steps are very similar. Right click in the background of your computers desktop. Select the option for changing your background image. Click browse and find the folder you saved this image to and select it. Make sure you select 'stretch image' so that it fills your screen.
I'm off to go create one for May-Dec!!!! I'll be sure to share :)