The easiest way to play this song is to tune a down half step (one fret) i.e:

d#
A#
F#
C#
G#
D#

Then you can play E G A all the way through (technically, due to the re-tune they're Eb F# and Ab)

     Eb    F#    Ab   or, if you prefer       Eb    F#    Ab
d# --0-- --3-- --5--|                     d# --0-- --3-- --0--|
A# --0-- --3-- --5--|                     A# --0-- --3-- --2--|
F# --1-- --4-- --6--|                     F# --1-- --0-- --2--|
C# --2-- --5-- --7--|                     C# --2-- --0-- --2--|
G# --2-- --5-- --7--|                     G# --2-- --2-- --0--|
D# --0-- --3-- --5--|                     D# --0-- --3-- --x--|




You can play it without tuning down, but it won't be in the same key as the original, so 
you can't play along :(

Magic!