If your installation is correct, the Darkest Hour launcher should show TRP as available mod. AND you should see DH Full and DH Light as available mods.
I only mentioned the Darkest Hour checksum to give you the possibility to check if your Darkest Hour installation is correct.
As soon as you extract the file to the correct location, an additional folder ( in addition to Darkest Hour Full ) is visible under the \mods\ folder.
You must not overwrite any "Darkest Hour Full" files. Otherwise you will not be able to play Darkest Hour Full correctly.
I only mentioned the Darkest Hour checksum to give you the possibility to check if your Darkest Hour installation is correct.
As soon as you extract the file to the correct location, an additional folder ( in addition to Darkest Hour Full ) is visible under the \mods\ folder.
You must not overwrite any "Darkest Hour Full" files. Otherwise you will not be able to play Darkest Hour Full correctly.