/\ My name is Giancarlo, I didn't come up with this, A friend of mine did... Ok the technique is basically for ur 2 right hand fingers. What you want to do is make ur 1st finger move at a half note pace on the A strng. and ur 2 finger at a quarter note pace on the D strng. Play with your left hand fingers between frets of both strngs and see what happenes. It took me 3 months to do it right, but after a while it come easy and you can do it faster and swith speed between fingers. Once you get it you will really adore it