It's almost Christmas time(time for the holidays, sorry) here's a tab I wrote out for 
how I think this song should really be played. Hopefully it suits you alright. :-)
(no capo)

Verse 1:

F#
Don't want a lot for Christmas

F#7
There's just one thing I need

B
Don't care about those presents

D
Underneath the Christmas tree



Chorus:

F#                      A#
I just want you for my own

D#m                  D
More than you could ever know

F#                 D#m
Make my wish come true

              G#m            Bm
You know that all I want for Christmas

   F#
Is you...



Verse 2:

F#
I won't ask for much this Christmas

F#7
I won't even wish for snow

B
No, I'm just gonna keep on waiting

D
Underneath the mistletoe



Verse 3:

F#
There's no sense in hanging stockings

F#7
There upon the fireplace

B
Cause Santa he won't make me happy

D
With a toy on Christmas Day



Chorus:

F#                      A#
I just want you here tonight

D#m            D
Holding on to me so tight

F#               D#m
Girl, what can I do?

              G#m             Bm
You know that all I want for Christmas

   F#
Is you...



Bridge:

A#
And all the lights are shining

   D#
So brightly everywhere

A#
And the sound of children's

Bm
Laughter fills the air

B
And everyone is singing

F#                D#
I can hear those sleigh bells ringing

G#m
Santa won't you bring me the one I really love

          Bm                  F#
Won't you please bring my baby to me...



Verse 4:

F#
I don't want a lot for Christmas

F#7
This is all I'm asking for

B
No, I just wanna see my baby

D
Standing right outside my door



Chorus:

F#                      A#
I just want you for my own

D#m                  D
More that you could ever know

F#                D#m
Make my wish come true

              G#m             D#       Bm
You know that all I want for Christmas

   F#       F#7
Is you...

   B    D  Bm   F#
Is you...