[evilfantasy]

http://support.microsoft.com/kb/940157 March 27, 2008

Windows Search 4.0 lets you perform an instant search of your computer. Windows Search 4.0 helps you find and preview documents, e-mail messages, music files, photos, and other items on the computer.

The search engine in Windows Search 4.0 is a Microsoft Windows service that is also used by programs such as Microsoft Office Outlook 2007 and Microsoft Office OneNote 2007. You can use this search engine to index a program's content and to obtain instant results when you search in a particular program.