Populate cells in Word from a database

[hotlilshan]

I'm using MS Word 2007 to create a simple "billing statement". What I would like to do is to be able to select an "organization" name from a pull down menu, and depending on that choice, other cells in the WORD document would populate according to a database of my clients information. I'm guessing this database would come from Excel (which I could make if so). For now, I have a few "drop down lists" for certain fields, but I would prefer to have predefined cells populate according to a database. A graphical example is at http://www.shan-dysigns.com/billing.jpg

I would like the drop down menu "organization" to populate the fields with circles.