Copy the reaper_cc121.dll for your system into the REAPER plugins folder.
Note: This folder is located inside the REAPER program folder (usually
"C:\Program Files\REAPER\Plugins" or something like that). It has nothing
to do with the VST-plugin directory of your system.

Copy the CC121 folder with the EQ maps into the REAPER Data folder (usually
"C:\Program Files\REAPER\InstallData\Data").

Open REAPER, go to the preferences and select the control surfaces tab.
Click on 'Add' and select 'Steinberg CC121' as control surface mode. Be sure
to select the proper MIDI input and MIDI output for your CC121.

The virtual CC121 executable may be put where ever you want. It is self contained
and has no 3rd party dependencies.
