WELL,HERES MY INTERPRETATION OF THE G/F G/E G/D PROGRESSION IN THE SONG, AS POSTED BY CHRISTIAN.
YOU NEED TO DROP-D TUNE YOUR GUITAR, i.e DADGBE, IN ORDER TO ROOT THE NOTES F,E,D WHILE PLAYING THE G CHORD.
YOU CAN PLAY THE G THEN IN THIS MANNER:
E  ------3--------
B  ------0--------
G  ------0--------
D  ------0--------
A  ------5--------
D  ------5--------

AND THE Em:

E  ------0--------
B  ------0--------
G  ------0--------
D  ------2--------
A  ------2--------
D  ------2--------


NOW FOR THE OTHER CHORDS:

   G/F

E  ------3--------
B  ------0--------
G  ------0--------
D  ------0--------
A  ------2--------
D  ------3--------

   G/E

E  ------3--------
B  ------0--------
G  ------0--------
D  ------0--------
A  ------2--------
D  ------2--------

   G/D

E  ------3--------
B  ------0--------
G  ------0--------
D  ------0--------
A  ------2--------
D  ------0--------



PUT TOGETHER:
      G/F               G/E               G/D

      d  d u d u        d  d u d u        d  d u d u
E  ------3-3-3-3-----------3-3-3-3-----------3-3-3-3-----
B  ------0-0-0-0-----------0-0-0-0-----------0-0-0-0-----
G  ------0-0-0-0-----------0-0-0-0-----------0-0-0-0-----
D  ------0-0-0-0-----------0-0-0-0-----------0-0-0-0-----
A  ------2-2-2-2-----------2-2-2-2-----------2-2-2-2-----
D  ---3-----------------2-----------------0--------------

d=down u=up



DO LET ME KNOW IF ITS OK!?

luciferesque@yahoo.com