Oh, u must go Folder Options and SHow File Extensions.
Simply go My Computer
Click on Tools > Folder Options
When Folder Options comes out click on the "View" tab.
In the list of items under Advanced Settings, uncheck the box next
to "Hide extensions for known file types"
Then click OK.
Den u create a text file.
When you want to create text make sure put .txt in the end because
you show the file extension.