How does Copy from Eudora to DT work?

I just downloaded DT 1.9.4
I saw the Scripts and macros folder and copied everything but the “about …” file into the folder scripts folder as I understood the instructions.
Anyway, I don’t want to get into scripts but would love to get Eudora plain text messages into DT.
How do I manage this? Where do I put the “Copy from Eudora to DevonThink” file?