Although Windows XP includes built-in support for most Sound Blaster sound cards, Creative has optimized the drivers for certain models to take advantage of Microsoft's next-generation operating system. This update is intended to provide support for Windows 2000 and Windows XP. "This is a full driver installation and does not require any previous installation. For a new Windows 2000 or XP installation (as opposed to a system that has been upgraded from a previous Windows version), you may wish to install the applications from your Sound Blaster PCI 512 first and then install this update.