>I have set TITLE = Supermarket in CONFIG.FPW and it works I run the program on a computer with VFP inside but when I setup my application on my user station with no VFP inside the computer, the main screen title shows "Microsoft Visual FoxPro". Why ?

Try this:

In CONFIG.FPW:
SCREEN=OFF

In code:
_screen.Visible = .F.
_screen.Caption = "Supermarket"
_screen.Visible = .T.

HTH