Windows Search 4.0 is now available as a final version from Microsoft for download. A Preview version of Windows Search 4.0 was previously available for download for Windows XP, Vista and Server 2003. A lot of quality improvements have been made since the Preview version because of the feedback that Microsoft got from its users. The Preview version was downloaded around 300,000 times!
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.