There is a video of Dave playing this acoustic on youtube.
http://ca.youtube.com/watch?v=pJu7GO1rGBE

It's easy. I think its tuned a half step down, but I personally don't bother.

F

F
I threw darts at a spinning globe
Swapping out passport photos
I walked west to the setting sun
Every single step I grow another second young

Dm      F          Bb
All my hair grows in
Dm        F         Bb
Wrinkles leave my skin
Dm                 F            Bb
But still, don't fade, I'll be back again when the tide is in some day

F
I don't know who else to ask
         Bb
Sitting in the dark, holding an empty glass
F                               
Stained my teeth with more red wine
        Bb
I'm a romantic, but never pearly white

Dm      F         Bb
All my hair grows in
Dm        F       Bb
Wrinkles leave my skin
Dm               F              Bb
But still, don't fade, I'll be back again when the tide is in some day

F
Elephant Shell
Bb                             F
You're my cave and I've been hiding out
Bb                  F
Will you tell me a little bit about
  Bb                  F   Bb
A bit about yourself

F
Elephant Shell
Bb                           F
You're my cave and I've been hiding out
  Bb                  F
Will you tell me a little bit about
   Bb
A bit about yourself 

F