http://www.youtube.com/watch?v=fFaJ9ljWwIs

watch the video for timing and struming. since the whole 
song repeats all you need to know are some simple chords:

C#m, A, B

intro:
the intro to the song is a C#m with the alternation 
of removing the pinky finguer and the middle finguer 
of the fret board and strumming.
the figure should look something like this:

e|---4---4---4---4---4---4--|
B|---5---5---5---4---4---5--| (this part is a little 
G|---6---6---6---6---6---6--| tricky, so experiment with it)
D|---6---4---4---6---6---6--|
A|---4---4---4---4---4---4--|
E|--------------------------|
 
the intro then continues into the A chord and B chord

intro twice...

B               C#m
'Cause it's the time
                           A
When the ladies all hit the club
                         B        
And we're all leanin' out the line
               C#m
'Cause we know who's at the door
                 A                 B
I know you got your eyes set out on me
                 C#m             A          B
I'm breakin' for the dance floor, come with me
C#m            A       B
You got me screamin' o-oh!

chorus:
C#m
Fly senorita, lookin' hot tonight
A                           B
Back it on up and enjoy the ride
C#m
Shake it shake it shake that bubble tonight
A                      B
Baby, shake that thing tonight, Oh! 
C#m
Fly senorita, lookin' hot tonight
A                           B
Back it on up and enjoy the ride
C#m
Shake it shake that bubble tonight
A                      B
Baby, shake that thing tonight, Oh!


I'm not sure about the tunning, I play it in standard 
and it sounds good, although, out of personal 
preference I slide everything to start from the 
third fret, but again thats just personal preference.