Place a capo on the 1st fret. This is the way JR Aquino plays it in his cover.
It also sounds good when you play it along with the original version.
JRA's cover: http://www.youtube.com/watch?v=DAejZlZX2Kw
Listen to the song to get the rhythm and to time the chord changes

Chords:
Dm7: xx0211
Am7: x02010
Gm:   355333

Intro:
Dm7, Am7, Gm, Am7
          
[Verse 1]

Dm7
I think I started somethin', I got what I wanted did, didn't I

Am7Can't (x02010@1)feel nothin', superhuman even when I'm fuckin' Viagra poppin',

GmEvery (355333@1)single record autotunin' zero emotion, muted emotion,

Am7pitch (x02010@1)corrected, computed emotion, uh-huh I blame it on the

Dm7
Model broad with the Hollywood smile, aww

Am7Stripper (x02010@1)booty and a rack like wow, Brain like Berkeley

GmMet (355333@1)her at Coachella, I went to see Jigga, she went to see Z Trip, perfect

Am7I (x02010@1)took a seat on the ice cold lawn, she handed me a ice blue bong, whatever

Dm7
She said she wanna be a dentist really badly, she's in school payin'

Am7For (x02010@1)tuition doin' porn in the Valley, at least you workin'

GmBut (355333@1)girl I can't feel my face, what are we smokin' anyway

Am7She (x02010@1)said don't let the high go to waste, but can you taste a little taste

[Hook]

Dm7
Novacane, baby, baby,

Am7Novacane, (x02010@1)baby, I want you

GmFuck (355333@1)me good, fuck me long, fuck me numb love me now, when I'm gone

Am7Love (x02010@1)me none, love me none, love me none, numb, numb, numb, numb

[Verse 2]
Sink full of dishes pacin' in the kitchen, cocaine for breakfast, yikes
Bed full of women, flip on a tripod, little red light on shootin'
I'm feelin' like Stanley Kubrick, this is some visionary shit
Been tryna film pleasure with my eyes wide shut but it keeps on movin'
I blame it on the model broad with the Hollywood smile
Stripper booty with the rack like wow, I'll never forget ya
You put me on a feelin' I never had, never had, never had
And ever since I've been tryna get it back, pick it up and put it back
Now I'm somethin' like the chemist on campus
But there's no drug around, quite like what I found in you
I still can't feel my face, what am I smokin' anyway
She said don't let the high go to waste but can you taste a little taste of

[Hook]

[Bridge]
Novacane for the pain

[Outro]
Pretty girls involved with me
Makin' pretty love to me pretty, pity pity
All the pretty girls involved with me
Makin' pretty love to me pretty, pity pity

I can't feel a thing
I can't feel her
Novacane for the pain