Install Office 2000 on Vista Home Premium problem

Trying to install upgrade version of Office 2000 on Windows Vista Home Premium. Word 97 installs OK and Office 2000 Standard Upgrade version installation program starts and gets to the point of the “Installing Office 2000” dialog box and then basically hangs. (Office 2000 product key entered and accepted.) Task manager shows Office 2000 installation running and FindFast.exe fluctuating from 84 to 96 percent CPU usage but no progress for up to about a half hour. Same result manualy starting the installation in compatibility mode for Windows XP SP2 and run as administrator.