the chords are:
E 00122x
A 022200
Bm (bar chord) 244422
C# (bar chord) 456644




  E           A
My baby don't mess around
  Bm          C#
Because she loves me so

And this I know fo shooo..
...

//(repeat this through whole song)
//now come to the technique


before you play each chord play the basic tone, then you play the entire chord and after 
that just the 3 upper strings like in the example of this E chord  :
E |--0-0-0-0-|
B |--0-0-0-0-|
G |--1-1-1-1-|
D |--2-x-x-x-|
A |--2-x-x-x-|
E |0-x-x-x-x-|
basically hold the E string with the thumb down so it sounds like a death note.

then when you play Bm you have to play this

E|--2-2-2-2-----4-4-4-4-|
B|--4-4-4-2-----5-5-x-5-|
G|--4-4-4-4-----6-6-6-6-|
D|--4-4-x-4-----6-x-6-x-|
A|2-2-x-x-x-2-4-4-------|
E|x-2-x-x-x-----4-------|

then jsut repeat this all over the song