How do I create a default association for files with no extension?

A. Normal files with an extension can have a program associatedhowever this is not the case with files that don't have an extension. If youdouble click on one and select an application and check the box to always usethat application it is ignored and every time you select a file you have tochoose the application.

You can force this using the registry:

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If you now double click on a file with no extension it will open with theapplication selected.

To check what an existing application used look at its entry underHKEY_CLASSES_ROOT, e.g. HKEY_CLASSES_ROOT.doc uses Word.Document.8 so if youwanted this as your default editor you would change HKEY_CLASSES_ROOT.(Default)to Word.Document.8.

Any method which avoids the need to edit the registry is as follows: