Harmony No Harmony Solo

This song consists basically of two parts - the harmony and the no-harmony. The harmony
the chorus and the no-harmony is the intro/verse. I could only work out the no-harmony
which is (Standard tuning):
e|-----0h3-5-3p0-----0-0-------0h3-5-3p0---0---0---------| 
B|---0-------------6-------3-0-----------3---5---3-0-----| 
G|-5-------------5-------5---------------------------(5)-| 
D|-------------------------------------------------------| 
A|-------------------------------------------------------| 
E|-------------------------------------------------------| 

If you have a way of playing the harmony, please let me know as it's a great song and
love to be able to play the whole thing.