Do you like babies wallpapers ? I do. If your like, you can have look at Anne Gedde's website. Ann Gedde is a famous photographer.You can download free wallpapers and screen savers from this site. Check the following link to find the wallpapers available. You will have to register to download the actual size image which you can use as wallpaper. Here are some examples
Here is the link - http://www.annegeddes.com/Modules/extra/Wallpaper/index.aspx (Not working now)
Update:
Now you can download wallpapers with monthly calendar on it from the website. The wallpapers are available in diferent resolutions matching your computer screen resolutions.
Here are some samples
The site will be updated every month with the latest month calendar, so check the site every month. Get the latest baby wallpapers with calendar from this link.