Something along the following lines:

Dim oWord As Word.Application
Dim oDoc As Word.Document

Set oWord = CreateObject("Word.Application")
With oWord
 .WindowState = wdWindowStateMinimize
 Set oDoc = .Documents.Open("decision.doc")
 With oDoc.MailMerge
   .Destination = wdSendToNewDocument
   .Execute ' Pause:=something
 End With
 ' The Active Document is now the newly created document
 ' If you want that, you may not need any code, or maybe:
 .ActiveWindow = ActiveDocument.ActiveWindow
 ' and to close the mail merge main document, try
 oDoc.Close savechanges:=wdDoNotSaveChanges
 ' if you want the mail merge main document,. try
 '.ActiveWindow = oDoc.ActiveWindow
 .WindowState = wdWindowStateMaximize
 Set oDoc = Nothing
End With
Set oWord = Nothing

However, it may not be the fact that it is Word basic that is preventing it
from working. At least one other possibility is that documents with mail
merge dta sources attached will not open correctly when you try to open them
programmatically because of a new security "feature" which requires you to
set up a new registry entry - see

http://support.microsoft.com/default.aspx?scid=kb;en-us;825765

Peter Jamieson