Windows Vista includes two themes: Windows Vista and Windows Classic, which is similar to the look and feel of earlier versions of Windows. Each person who has an account on the computer can choose his or her own theme.
Open Theme Settings by clicking the Start button , clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Theme.
Under Theme, select the theme you want, and then click OK.
Software companies might develop additional themes for download or purchase. Only download files from websites that you trust. For more information, see When to trust a website.
You can save your desktop background, system sounds, icons, and other elements as a custom theme. To save your current settings as a theme, click Save As, type a name for the theme, and then click Save.