This example displays the date from the letter that appears in the active document.
MsgBox ActiveDocument.GetLetterContent.DateFormat
This example creates a new LetterContent object, sets the date line to the current date, and then runs the Letter Wizard by using the RunLetterWizard method.
Set aLetterContent = New LetterContent
aLetterContent.DateFormat = Date$
ActiveDocument.RunLetterWizard LetterContent:=aLetterContent