Intro Chords
|------------------------------------------------------------------------|
|------------------------------------------------------------------------|
|--4-4-4-4-4-4-4-4---------------------------------------4-4-4-4-4-4-4-4-|
|--4-4-4-4-4-4-4-4---4-4-4-4-4-4-4-4---6-6-6-6-6-6-6-6---4-4-4-4-4-4-4-4-|
|--2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4---6-6-6-6-6-6-6-6---2-2-2-2-2-2-2-2-|
|--------------------2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4-------------------|      

The ska chords which go out through the song are almost the same
|--------------------2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4-------------------|
|--4-4-4-4-4-4-4-4---2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4---4-4-4-4-4-4-4-4-|
|--4-4-4-4-4-4-4-4---3-3-3-3-3-3-3-3---4-4-4-4-4-4-4-4---4-4-4-4-4-4-4-4-|
|--4-4-4-4-4-4-4-4---4-4-4-4-4-4-4-4---6-6-6-6-6-6-6-6---4-4-4-4-4-4-4-4-|
|--2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4---6-6-6-6-6-6-6-6---2-2-2-2-2-2-2-2-|
|--------------------2-2-2-2-2-2-2-2---4-4-4-4-4-4-4-4-------------------|

then do the part which rocks (same chords as intro!)

then when she say "Come on Eileen with the ska strokes behind her voice
play the following.
|-------------4-4-4-4---2-2-2-2----4-4-4-4-|
|--6-6-6-6----4-4-4-4---2-2-2-2----4-4-4-4-|
|--6-6-6-6----5-5-5-5---3-3-3-3----5-5-5-5-|
|--6-6-6-6----6-6-6-6---4-4-4-4----6-6-6-6-|
|--4-4-4-4----6-6-6-6---4-4-4-4----6-6-6-6-|
|-------------4-4-4-4---2-2-2-2----4-4-4-4-|

that's it,enjoy yourself!