>>Can you lead me to the path of the common dialog.
>
>It's fully documented in the MSDN Library. Probably the easiest way to get to the help file is to drop the control on a form (you need to make sure that the check box for the Microsoft Common Dialog Control 6.0 is checked on the Controls tab of the Tools/Options dialog). Simply right click on the control and select Help from the context menu.

George,

I'm trying to find Help on Filter property of this control, but haven't find a Help file yet.