What does Vito say to Barzini?

At the wedding in the beginning, Vito goes over to Barzini, shakes his hand and says something which sounds like "Don Barzini...Tutta (unintelligable) a La Cosa Nostra". Can anyone understand what he says, and translate?

I can't make it out.

I haven't looked at it, but might he be saying "casa," maybe just welcoming him to the Corleone home?

Marlon had too mny cotton balls in his mouth in that scene.

"Benvenuto a casa nostra"
Welcome to our home.

That's the answer.

Yes. And, did you notice the absolutely cold way the two Dons "embraced" each other?

Yes extremely cold, and Barzini made little effort to show respect to Vito on his daughter's wedding day. It was clear he was there cause he had to be, but by seating himself away from the festivities he was sending a message that he didn't want to be there.

One of the better foreshadowings in that scene was when Barzini made sure his picture would not be taken by ripping the film out of a camera......later his mug was on the front page of the Daily News.

The other dons were all sitting on a seperate table, which was probably because that table was being reserved for them.

Would Barzini not attending have been such an insult? Vice versa, would Don Corleone not inviting Barzini had been such an insult?

Yes to both.

The scene was reshot. In the original scene, Vito says

"Come on-a my house, my house, I'm gonna give you everything."

Kind of funny if you ask me--Barzini doesn't want to be there, Corleone probably doesn't want him there, but yet diplomacy dictates that Barzini be present and that Vito invited him.

And, hearkening back to his youthful days:

"...peach anna pear an' I love-a your hair..."

No it was "Hey mambo...mambo Italiano"