WS4 lets you perform an instant search of your computer. WS4 helps you find and preview documents, e-mail messages, music files, photos, and other items on the computer. Please refer to the Knowledge base article for a full description of the technology.
Note The WS4 installation process automatically upgrades previous versions of Windows Search technologies.
Windows Server 2008; Windows Vista Service Pack 1 (32-bit)
Windows Server 2008; Windows Vista Service Pack 1 (64-bit)
Windows XP Service Pack 2; Windows XP Service Pack 3
Windows XP 64-bit; Windows Server 2003 64-bit
Windows Server 2003 Service Pack 2 32-bit
Knowledge base article KB940157