The chord progression is simply:

D - D - E  x 2
D - D - A  x 1
D - D - E  x 1
D - D - A7 X 1*

rake the chords so you can hear the individual notes

*E--3--0--------------------------------------------------|
 B--------3--0--------------------------------------------|
 G--------------3--2--0-----------------------------------|
 D-----------------------2--0-----------------------------|
 A-----------------------------2--0-----------------------|
 E-----------------------------------3b4p0 (let ring)-----|


 #=tremelo pick (up and down really fast)

 E--/12#######################/12##########################
 B--/12#######################/12##########################
 G --------------------------------------------------------|
 D---------------------------------------------------------|
 A---------------------------------------------------------|
 E---------------------------------------------------------|

i have been trying to work out the bass line and have got most of it but i am
a little stuck so if anyone can work it out it'd be great if you mailed it to me