address book-how to change format of labels

I am trying to make Christmas labels. right now I can get them to merge, but my output is something like John Doe & Mary in the addressee line. I would like to change it to John & Mary Doe. the street address come out ok etc. The only other problem is sometimes the spouse is left off. That is, in the card under spouse I have a name (Mary) but when I print the card it only shows John Doe. I played with it for a while last night and don't know what I am doing wrong. thanks in advance