Okay, this is Banish Misfortune as I know it (and it seems an exact match for Dick's description):

X:1
T:Banish Misfortune
M:6/8
L:1/8
Q:3/8=110
K:DMix
e|fed cAG|A2d cAG|F2F DED|F2F GFG|
  A3  cAG|AGA cde|fed cAG|Adc d2:|
e|f2d dcd|f2g agf|e2c cBc|e2f gfe|
  f2g agf|e2f gfe|fed cAG|Adc d2:|
e|f2g e2f|d2e c2d|ABA GAG|FGE FED|
  c3  cAG|AGA cde|fed cAG|Adc d2:|

Each part begins and ends in D. As I read it, the only other chords you really need are C major and A minor. (Dick would like power chords in a few places - I'll leave him to say where he'd put them).

What does your description of it as being either in G major or E minor tell you to do?