I had just noticed that the other tabs were just a wee bit off.
So I made it correct as possible. This is derived from watching him play the song in 
several versions, but predominantly this one.
http://www.youtube.com/watch?v=k0XCA9_6lIA&feature=related

Standard tuning
Capo 2

For the C and the Am, he throws his pinky onto the fourth fret of the G string.
Cmaj7  - x32410
AmAdd9 - x02410

And he specifically does the C to Am walk down, so he uses the G/B
G/B (143121@7)    - X20030

Intro: C G/B Am C G/B Am

Verse:

C (x32010@1)        G/B (143121@7)          AmI (x02210@1)fear I'm dying of complications

C (x32010@1)            G/B (143121@7)                  AmComplications (x02210@1)due to things that I've left undone

C (x32010@1)                G/BThat (143121@7)all my debts will be left unpaid

AmFeel (x02210@1)like a cripple without a cane

C (x32010@1)             G/BI'm (143121@7)like a jack of all trades

AmWho's (x02210@1)a master of none

Intro twice, on the second time he throws in
a little riff. Dallas plays it that way.
e|----0---0-0----0------------0---0-0----0---0-----|
B|----0h1-1-1----3------------1---1-1----1---1-----|
G|----4---4-4----0-----5---7--4---4-4----4---4-----|
D|----2---2-2----0--5/7-7/9---2---2-2----2---2-----|
A|--3-3---3-3----2------------0---0-0--0-0---0-2-3-|
E|-------------3-----------------------------------|

Verse 2:

C (x32010@1)             G/BThen (143121@7)there's my father

AmHe's (x02210@1)always looking on the bright side

C (x32010@1)          G/B (143121@7)                     AmSaying (x02210@1)things like "son life just ain't that hard"

C (x32010@1)          G/BHe (143121@7)is the grand optimist

AmI (x02210@1)am the world's poor pessimist

C (x32010@1)              G/BYou (143121@7)give him buttons sometimes

AmAnd (x02210@1)he will escape unscarred

Pre-Chorus/Chorus:

G (320003@1)                     AmI (x02210@1)guess I take after my mother    x2

I used to be quite resilient
Gain no strength from counting the beads on a rosary
Now the wound has begun to turn
Another lesson that has gone unlearned
But this is not a cry for pitty or for sympathy

I guess I take after my mother