>>>Hi everybody,
>>>
>>>Do you know if there is a way to find the actual open command line (and change if needed) without loading some extra freeware?
>>>
>>>Say, I just want to find out the exact command for .sql file. I found this blog post
>>>
>>>http://www.thewindowsclub.com/change-file-associations-windows
>>>
>>>and it refers to a freeware utility. Is there a way to find that open command and change it using just the Windows 7?
>>>
>>>Thanks in advance.
>>
>>Type 'Default Programs' in the Start Menu search box
>
>I did. It does allow me to change the default program, but I am looking for the actual open command line. I do not see it in these dialogs.

The normal convention in Windows is to append the file name to its handler e.g.

DefaultProgram.exe FileYouWantToOpen.extension

You're starting the default program, passing in the file name as a parameter.