cannot open directly MOI files

 From:  Michael Gibson
3393.3 In reply to 3393.1 
Hi Rudy, also this mechanism of how Windows figures out which program to launch when you double click on a certain kind of a file in the Windows Explorer shell is often times called "File associations", if you want to try to find some more information about it.

Like for instance here are a couple of articles which may help:

- Michael