I've watched him play this song up-close several times, and it still amazes me. If you've never seen him up-close, I'll describe it. He holds the pick normally between his thumb and fore finger. Steve generally uses Marshall amps for solos, but in this case it sounds like a Jazz Chorus with perhaps a Marshall pre-amp stage or Boss pedal for distortion. The two above are repeated throughout the verses.
Second verse is the same as the first except everything is a full step higher.
Thus, everything is played exactly the same except two frets higher. Second chorus is the same as the first.