The read me file explains how to extract them....
In order to install this mod, you are going to need to download 2 different file extracting programs.
The first is called Winrar. And the 2nd is called 7-zip. Both are completely free and safe.
1st Install Winrar: You can find it here =
WinRAR Free Download
2nd Double click on the first Public Enemies folders and click extract to unzip the file Public Enemies.exe.
3rd Install 7-zip : You can find it here =
7-Zip
4th Click on 7zFM.exe to open up 7-zip
5th Click on Public Enemies.exe Then click Extract.
This will extract 4 files uEm10.arc, uEm11.arc, uEm12.arc and uEm14.arc
6th Then go to Programs --> Capcom --> Resident Evil 5 --> nativePC --> Image --> Archive
and inside of Archive you are going to copy over, uEm10.arc, uEm11.arc, uEm12.arc and uEm14.arc