Note When you use this method, the appearance of some windows (such as the Add or Remove Programs or Set Programs and Defaults windows) may be affected by the Luna theme. For example, the colors may be different from what they were before the problem occurred. Therefore, you may prefer to use one of the previous methods to resolve this problem.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
When you install Windows XP SP1, the following files are renamed to Shellstyle.dll: