Here's my first tab, it's a really easy song.  I figured it out the first time listening

Not much bass in this song, but here's the gist of it.

chorus
G|-------------------------------------------------------------------------------------------
D|-------------------------------------------------------------------------------------------
A|-22222-02-02-2/14-----------------------------------------------------------------
E|-------------------------------------------------------------------------------------------
(listen for rhythm)

improv in chorus with things like this...
G|-------------------------------------------------------------------------------------------
D|-------------------------------------------------------------------------------------------
A|--22----------------------------------14/2----------------------------------------------
E|-2-----------------------------------------------------------------------------------------
or....     			or...
G|----44-----------------------------------------------------------------------------------
D|--4---------------------------------------------------------------------------------------
A|-2----------------------------------------------------------------------------------------
E|-------------------------------------------------------------------------------------------

and that's about it.  i always end up improving on this song, so do whatever you feel like doing.  thank you black eyed peas for being an awesome 
hip hop group