This sounds correct to me if u r having any guitar problems or if you can improve this riff tell me at [email protected]. Or if u just want to comment on this u r very welcome to send me an email. 
The tuning for this song P.O.D ‘Set It Off’ is Drop D tuning down 1 step                    (low to high) C-G-C-F-A-D
          |--------------------------|
          |----3--3--3--3--3---------|
          |----2--2--2--2--2---------|	Repeat 
          |----0--0--0--0--0---------|
          |--------------------------|
          |---------------------0----|

          |-------------------------------------------------------------------|
          |-------------------------------------------------------------------|
          |-------------------------------------------------------------------|
          |--3--3--3--3---3-/-5---5--5--5--2--2--2---2-/-3---3--3-------------|
          |--3--3--3--3---3-/-5---5--5--5--2--2--2---2-/-3---3--3-------------|
          |--3--3--3--3---3-/-5---5--5--5--2--2--2---2-/-3---3--3-------------|


This is simple but it sounds great!!
Have fun!

Sent from DanTheGuitarMan