This package installs the correct Intelide.sys driver for the listed workstation models and operating systems. When Microsoft Windows 2000 Professional is installed on a listed workstation model with an Intel ICH4 or ICH5 southbridge, the driver that is used for the IDE controller may be the generic Pciide.sys driver instead of the correct Intelide.sys driver. This issue is fixed by Service Pack 4. For more information about this issue, see Microsoft Knowledge Base article 322359, "Intelide.sys Is Not Used on Computers with ICH4 or ICH5."