Have you already installed Windows 7? Then take a look at the car themes available to download on microsoft.com now.
Themes include Ferrari, Infiniti and Porsche, which can be downloaded to customise your PC. Bike riders can opt for a theme from Ducati.
A theme is a combination of pictures, colours, and sounds on your computer. It includes a desktop background, a screensaver, a window border colour, and a sound scheme. Some themes might also include desktop icons and mouse pointers.
Infiniti's theme package includes pictures of its Essence concept car, which was unveiled at the Geneva motor show earlier this year.
The Windows 7 operating system was launched last week.