To install Fall of Rome 2.0-- the instruction file is called Fall_of_Rome_20.txt and it's hiding inside the zip called
Fall_of_Rome_20_MAIN.zip

When you install these files, be careful when using Winzip. Be certain that "use folder names" is on. The instructions omit this (critical) point.

To install Fall of Rome 2.1-- the instruction file is FALL OF ROME 2.1-README.txt

This file tells you to "copy" files but it means "unzip" the files. "Use folder names" should not be used when you install 2.1