Set the Macro Name to AutoOpen, click on Ok, to start recording the macro.
Click 'Macros' - > 'Stop Recording'
Click 'Macros' -> 'View Macros'
Select 'AutoOpen' and click on 'Edit'
Paste the following text into the macro
Public Sub AutoOpen()
ThisDocument.Application.ActiveWindow.View.Zoom.PageColumns = 1
ThisDocument.Application.ActiveWindow.View.Zoom.Percentage = 100
End Sub
Becomes....
Click 'File' -> 'Close and Return to Microsoft Word'
Obviously, altering
'PageColumns = 1'
to another value will change the default number of columns, while changing
'Percentage = 100'
to another value will change the default amount of zooming.
Credit is given to Ondrej Tucny at
http://superuser.com/questions/237560/any-way-to-set-a-default-view-in-word-2007-or-2010-and-keep-among-restarts/285358#285358