Hi Kitano
Do you mean you have a C# WinForm or Console app (or something similar) that starts the Word application and creates a new document?
Which version of Word are you using?
Could you show us the code, please, that you're using to start Word and create the "Word automation file"?
FWIW, newspaper columns are controlled by Document.PageSetup.TextColumns
Cindy Meister, VSTO/Word MVP