Not sure if this will help but it can be uninstalled
http://www.microsoft...&displaylang=enOFF2000: Windows Installer Appears Every Time a Program Is Started
http://support.micro...kb;en-us;265194Windows Installer starts each time that a new user starts an Office 2000 program
http://support.micro...kb;en-us;312596How to use an Office 2000 Setup log file to troubleshoot Office Setup problems
http://support.micro...kb;en-us;237957To manually install the Windows Installer, follow these steps:
1. Insert Microsoft Office 2000 CD 1 or CD 2 in the CD-ROM drive.
2. Click Start, point to Programs and click Windows Explorer. Browse to the Msi folder on the CD.
3. Double-click Instmsi.exe for Microsoft Windows 95 or later, or Instmsiw.exe for Windows NT version 4.0.
How to resolve Common "Windows Installer" Problems
http://support.micro...kb;en-us;555175It could be worth using the installer clean up if you remove Office
http://support.micro...kb;en-us;290301I choose complete install in Office set up and leave the installation files on then run Office update before using it