This song is done with Capo 4  in STANDARD TUNING  

I am not sure of the names of some of the chords but I'm positive my tab is right 
i have played through with this version over 20 times. http://www.youtube.com/
watch?v=2dnrosVyamY&feature=fvw


      E     E7   Ev7    E9    B7   B72    A    Fm7  Amaj7   Am   Amaj79
E|----0-----0-----0-----0-----2-----2-----0-----0-----0-----0------0--------|
A|----0-----3-----0-----2-----4-----2-----2-----2-----2-----1------2--------|
D|----1-----1-----1-----1-----2-----2-----2-----2-----1-----2------1--------|
G|----2-----0-----0-----2-----4-----4-----2-----2-----2-----2------4--------|
B|----2-----2-----2-----2-----2-----2-----0-----4-----0-----0------0--------|
E|----0-----0-----0-----0-----2-----2-----0-----0-----0-----0------0--------|


                                    INTRO
H = HAMMER ON
P = PULL OFF
E|----------------------------|
A|----------------------------|
D|----------------------------|    REPEAT 4X
G|----------------------------|
B|---2H4P2--------------------|
E|-0-------4-2----------------|

(IF YOU COUNT 1-2-3, 1-2-3 ALONG WITH THE SONG YOUR CHORD CHANGES SHOULD BE ON THE 1 COUNT)

                               VERSE 1
 E          E9        B7     B72    B7      B72      E        E9      
Christmas, Christmas time is near, Time for toys and time for cheer, 
 A          B7      Fm7       B7   Fm7    B7        E    E9
We've been good but we can't last, Hurry Christmas hurry fast
 E      E9         B7        B72  Ev7   E7     Amaj7  Amaj79
Want a plane that loops the loop, Me I want a hula    hoop,
 A      Am     E         E7          A         B7       E
We can hardly stand the wait Please Christmas don't be late.

During the instrumental break for the talking, they just play the verse 
progression over again, when they come back in there is a key change, so you will 
play pretty much the same exact chords as the "want a plane..." up 2 frets as barred chords.
Thanks guys that's pretty much it, feel free to post any questions!

I should have a youtube video that shows how i play it up shortly!

(all right you Chipmunks! Ready to sing your song?
-I'll say we are!
-Yeah!
-Let's sing it now!
Okay, Simon?
-Okay!
Okay, Theodore?
-Okay!
Okay, Alvin? Alvin? ALVIN!
-OKAY!!!)

Christmas, Christmas time is near
Time for toys and time for cheer
We've been good, but we can't last
Hurry Christmas, hurry fast
Want a plane that loops the loop
Me, I want a hula hoop
We can hardly stand the wait
Please Christmas, don't be late.

Okay fellas get ready
That was very good, Simon.
-Naturally.
Very good Theodore.
-Ahhh.
Ah, Alvin, you were a little flat, watch it.
Ah, Alvin. Alvin. ALVIN!
-OKAY.

Want a plane that loops the loop
I still want a hula hoop
We can hardly stand the wait
Please Christmas, don't be late.
We can hardly stand the wait
Please Christmas, don't be late.

Very good, boys
-Lets sing it again! Yeah, lets sing it again!
No, That's enough, lets not overdo it
-What do you mean overdo it?
-We want to sing it again!
Now wait a minute, boys
-Why can't we sing it again?
-[chipmunk chatter]
Alvin, cut that out..Theodore, just a minute.
Simon will you cut that out? Boys...