
To set the icon for a prg or fpg etc-

1) right click windows background to bring up the properties menu

2) Click on "Web" tab  / click Yes

3) Click the "File Types" tab

4) Type the extention for the file in the "associated extention" box
   e.g.  .prg
 
5) Type "text\code" in the content type box

6) Click change icon at the top of the screen and browse for the icon

>>> you can also type a desciption of the file
    
>>> To get windows notepad to open a prg click new at the bottom.
    Type OPEN in the actions box and browse for notepad in the 
    windows folder.

7) To finish click close on both windows