This is my version of "when i come around" so um...im not sure if its 100% but it sounds 
really good and better than all the rest here. so check it out. 

wait two measures (only guitar) the come in on the e of the third beat in the third 
measure

intro            verse  
G|-----3-4-3-1-- --------3-4-3-1----------------
D|-4-4---------- -4--4-4----------------3-4-3-4-
A|-------------- ----------------4--4-4---------
E|-------------- -------------------------------

G|-------4- --------3-4-3-1----------------
D|-1-1-4--- -4--4-4----------------3-4-3-4-
A|--------- ----------------4--4-4---------
E|--------- -------------------------------

              chours 
G|-------3-4- -1-1-1-1-1-1-1-1- -4-4-4-4-4-4-4-4--  
D|-1-1-4----- ----------------- ------------------
A|----------- ----------------- ------------------
E|----------- ----------------- ------------------

G|-1-1-1-1-1-1-1-1- -4-4-4-4-4---4-3-
D|----------------- -----------------
A|----------------- -----------------
E|----------------- -----------------

in the verse the first four is an 8th note and the first note of the third beat is an 8th 
note too the rest 16th second measure fisrt three notes 8th hold last note there untill 
next measure repeat from begining chours is 8th except last 4 and 3. 4 is 16th and 3 8th. 
hope thats not too confusing just repeat parts over (you should be able to figure it out). 
questions comments? bassmaster-