Microsoft has released some new themes. One of those themes is a cat theme for Windows 7 with some very cute cat wallpapers.
Browse Cat Theme Gallery
(click on the picture to close the gallery)
Download Cat Theme
The cat theme is only one out of 3 new themes for Windows 7. You can download the latest Microsoft themepack here:
8 Trending Windows 7 Themes
4 Related Themes, Tweaks And News