Hrm... attempting to run the converter tool only gets me crashes. I'm assuming by reference files you mean the ForgeTools reference folder, since it's not explained very well.
What I've done:
Extracted the ForgeTools3.Rar content to C:\Stuff\ForgeTools
Extracted the Converter to C:\Stuff\ForgeTools\Converter
Copied the Entrenchment GameInfo and Meshes folder to C:\Stuff\ForgeTools\Convert_This
Created a sinsref.txt file in the ForgeTools\Converter folder, containing this:
c:\stuff\ForgeTools\ForgeTools 3\ReferenceData
c:\stuff\ForgeTools\ForgeTools 3\ReferenceData\GameInfo
c:\stuff\ForgeTools\ForgeTools 3\ReferenceData\Entrenchment\GameInfo
Attempted to run the sinstextbinner.exe file. Open it, navigate to C:\Stuff\ForgeTools\Convert_This\Entrenchment\GameInfo, and select it through the process described in the .exe file.
When I hit "Convert Now" a popup comes up with "ConvertData_Entrenchment.exe has stopped working" - If I hit "Close the Program" It justpops up again, so I have to close the sinstextbinner.exe andthen hit the close program button.
As a test, I put the ConvertData_Entrenchment.exe, CovnertData_OriginalSins.exe, and msvcr80.dll files into the \Converter folder, but still no game.