Listen to the song and you will easily pick up the strumming pattern.
Use palm muting and all downstrums to make it sound effective.

Chords needed: G,Em,C,D.
Intro: G (x4) Verse; G,Em



G (320003@1)                     EmVerse: (022000@1)Hey i, I wouldnt let him in
        G (320003@1)                              Em (022000@1)      No i, i wouldnt, i wouldnt let him in
        G (320003@1)                                                               Em (022000@1)      His eyes are close together and he wears a toothy grin dont let him in
        G (320003@1)                               Em (022000@1)      No i wouldnt if i were you let him in
        G (320003@1)  
     X2  Ooooh ooooh,
       Ooooo Ooooo
       Em (022000@1)      Oh, Oh, Oh,

Its the same chords throughout the verse..

Bridge: C
        Your all the time beleiving it wont happen to you 
        Em (022000@1)       but i guarantee one evening or before the night is through
        C (x32010@1)       always some wolf making out he's a pup
        Em (022000@1)                        D (xx0232@1)       Blow your house right down, gobble you up

Ooooh OoooH and so on X2
       
Lyrics may be wrong but you get the picture thats the chord layout of the song.

Any comments or CONSTRUCTIVE criticism much appreciated.
Thanks, peace :)