The Microsoft Office update that you downloaded requires Windows Installer 2.0 or above for installation. Please install Windows Installer 2.0 first, and then try installing the Office update again.
Windows Installer is the program that manages the installation and updating of many applications, including Microsoft Office products. See the article Overview of the Windows Installer Technology (Q242479) for more information about Windows Installer.
Please choose the appropriate version of the Windows Installer for your operating system:
Windows Installer 2.0 for Windows 95, Windows 98, and Windows ME
Windows Installer 2.0 for Windows NT 4.0 (SP-6) and Windows 2000
