This is an adaptation of Lament01's tab.  Neither his nor mine is entirely accurate,
but I made a few changes and clarifications that I thought might be helpful to others.  
This is how I play it.  Again: THIS IS NOT AN EXACT TRANSCRIPTION, BUT AN ACOUSTIC ADAPTATION

(Capo on 6th fret) 
Note:  don't play the top 'e' string throughout; it just sounds bad

Chords used:
C     (032010)
Cadd6 (032210)
D     (200232)
Em    (022000)
G     (320033)

Also, throughout the song there is a little flourish that comes at the end of some of the 
lines.  I've tabbed it as "G C G" but it's easiest to play by just moving the fingers you've 
got on the low E and A strings up and then back down, like this:
e|-x---x---x--|
B|-3---3---2--|
G|-0---0---0--|
D|-0---2---0--| 
A|-2---3---2--|
E|-3---0---3--|




Intro:
e|--------------|
B|--------------|
G|--------------|
D|------0h2p0---|  x 4 
A|--------------|
E|-3------------|

followed by: C Cadd6 C Cadd6 C Cadd6 C Cadd6 G C G    x 2
(you can get away with doing the G as (320010) if you want-- basically taking the top two 
fingers of a C and moving them one string down)

GUp (320003@1)and up and up I climb,

When I came up I was so far behind,
    CMy (x32010@1)head takes a lickin',

But my heart keeps on tickin,
          G (320003@1)name="chord_x32010@1">C GJust (320003@1)the same.
CAlways (x32010@1)startin' over but somehow,
                        G (320003@1)name="chord_x32010@1">C GI (320003@1)always know where to begin.
GRound (320003@1)and round and round I ride,

And just when I looked I hadn't even began,
    CTo (x32010@1)feel the effect,

A cool, dark fever,
         G (320003@1)name="chord_x32010@1">C GOn (320003@1)the brain.
       CThat (x32010@1)feelin' takin' over,

Like a holy rollercoaster,
         G (320003@1)name="chord_x32010@1">C GTo (320003@1)the grave.

EmHow (022000@1)can I await the day?
     DAnd (xx0232@1)last the night I'm here to see?
Em (022000@1)                       DHow (xx0232@1)do I await the mother load?
         Em (022000@1)                           G (320003@1)name="chord_x32010@1">C GIt's (320003@1)the art of feeling naked in your clothes.

GAgain, (320003@1)again, again I tried,

That's how I knew I would never be denied,
      CThat (x32010@1)face in the mirror,
                            G (320003@1)name="chord_x32010@1">C GWho (320003@1)could it be? It was my own.
      CThat (x32010@1)cool, dark figure,
                           G (320003@1)name="chord_x32010@1">C GThat's (320003@1)when I knew I was alone.
GOn (320003@1)and on and on I drive,

When will I know I have finally arrived?
    CSo (x32010@1)far I've gone, so far to go,
          G (320003@1)name="chord_x32010@1">C GIt (320003@1)never ends.
C (x32010@1)                                                       G (320003@1)name="chord_x32010@1">C GAlways (320003@1)starting over but somehow I always know where to begin
C (x32010@1)                                                       G (320003@1)name="chord_x32010@1">C GAlways (320003@1)starting over but somehow I always know where to begin
C (x32010@1)                                                       G (320003@1)name="chord_x32010@1">C GAlways (320003@1)starting over but somehow I always know where to begin