h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

In Windows NT (and probably 98?) you can use the "assoc" command to say which executable is launched to run files with a given suffix.
By default, .shs and .vbs files are associated to the command interpreter which is why they run the code when you double-click them.
if you use the comand:
assoc .shs=txtfile
and
assoc .vbs=txtfile

Then, when you open the attachment, it will open it as a harmless text file rather than a potentially harmful script file.

That sounds very useful.

To what file should I add these commands?

Noe - just run them from the console window (what used to be called the command prompt or dos box, when I was young )

It sounds like the sort of thing you should be able to do something about in the registry. However, I couldn't find where you should change it on a brief hunt just now, so using the DOS prompt is probably the best way.

\HKEY_CLASSES_ROOT\.vbs [default]="txtfile"
but I tend to discourage editing of the registry if there is _any_ alternative.