"Soundblaster Audigy audio driver for Microsoft Windows 2000 and XP version 5.12.04.285 Installation README This package installs an update to the Microsoft(R) Windows(R) 2000 or XP device driver for the Soundblaster Audigy audio adapter that comes preinstalled in your IBM(R) computer. This update requires approximately 41MB of space on your hard disk (drive C). This update package is intended for IBM ThinkCentre systems that come with a Soundblaster Audigy audio adapter. " And so on... This is from the 9e1z00us.txt that comes with the drivers.