Hey this is probaly a stupid question, but I'm learning Don't look back by Boston, and was wondering if I just mute the strings with my left hand on the fretboard or if I just do like a palm mute with my right hand near the bridge, or both? I know that's confusing, but thanks for any help..

and heres the intro part:

ok thanks. that's what I thought, but some of my friends said just use your right hand. Yeah well thanks again.