I don't know jack about guitar theory, but if you can figure this out, it sounds pretty good.  I'm pretty picky and I think this sounds close the the real version.  It's also pretty easy to play...

no capo

E=  	|-2-2-1-|-|

A27=	x-|-2-2-|-2   (play with fingering x-|-1-2-|-3)

A-c#?=   x-4-2-2-|-|	(give that pinky a workout!)
or whatever you want to call this chord

C#?=	4-x-4-4-x-|    (fingering=  3-x-1-2-x-|)
again, i don't know the name of this chord

*play these 4 in succession and you'll understand the fingering, also slide between C# and the other chords, it sounds slick*
*This is in 3/4 time*
*Listen to the song to hear the strumming pattern*

Intro: E (6count) A27(6count) A-C#(12 count)   repeat

Verse: C# (12) A2(12)  repeat

Chorus: A-C# (6) A27 (6) A-C# (6) A27(6) E(6) A27(6) A-C#(6)

That's it!  By far one of the best songs for a beginner guitar player.  It sounds great, and it really easy!!