First and formost, you will never get the same thick sound from that track unless it is played on the Ric 12-String. The Edge uses his 330 Ric, but the 360 works well too. The intro is played with the whammy pedal on the 2 octave-up position. I hve the original whammy, and that is whats its set on. I think the re-issue whammy also has the same setting. There is obviously overdrive and delay involved, however because I am at work, an cant remember off the top of my head, i dont have the exact settings. Maybe some others here can quick put up the proper delay times and overdrive settings.