Passing info from Form to Subform via button click

Hello,

I have designed a Customer Entry form in Access 2007 to hold the billing address of a customer. Within that form is a subform that holds the shipping address. There is the possibility of many shipping addresses for a customer, but there will only ever be one billing address. I want my users to click a button and be able to duplicate the billing addy fields to the shipping addy area. There are several threads here on the topic, but mostly they just chastise the questioner for his table structure and provide no really usable info. Since my table structure conforms to 1st normal we can skip that part if you don’t mind 🙂