Instructions
Connect the MIDI cable to the "Out" port on the electronic interface of your Roland TD-9S electronic drum set.
Connect the other end of the cable to the "In" port located on the drum set that comes with "Rock Band 2."
Press "Function," then "Midi" on the Roland TD-9S.
Set the Drums on the Roland TD-9S to the following settings: Red, 38; Yellow, 46; Blue, 48; Green, 45; and Kick Pedal, 36. This will match the inputs from your drums to those of the "Rock Band 2" video game.
Set the threshold for your cymbals to 16. This will increase the accuracy of your cymbal strikes.