Just unzip Trinity to your Plugins folder. \Plugins\GilesTrinity
Unzip TrinityRoutine to your Routines folder. \Routines\Trinity
To load Trinity, just start the game, log in, and start DB.
In DB, click on the Plugins tab up top, you should see Trinity listed in the plugins list. Put a check mark next to it to activate it. You can also highlight Trinity in this list and click on Config to make any adjustments you want. Then hit the save button at the bottom of this screen.