Hi jimijamer & welcome to chordie!
The Andrews Sisters had a great version of this sentimental favorite.
http://www.youtube.com/watch?v=Mg7ymwFsMI0
Here is a version of the song from Gunther Anderson's fine collection of lyrics and chords.
The notation is a little different, but look at the bottom of the page for 'how to read' instructions.
http://www.guntheranderson.com/v/data/dontsitu.htm
Somewhere out there on the web, there is probably a site dedicated to the all those WWII songs and big band hits - all that music was in it's golden age just before all the 'evil' rock&roll stole the show.
"That darn Pythagorean Comma thing keeps messing me up!"
[url]http://en.wikipedia.org/wiki/Pythagorean_comma[/url]