>If there is no such file with executive file, there will be an extra window opened... is there any ways not having config.fpw to open executive file without an extra window opened (i.e. IN SCREEN)

Only SCREEN=OFF will supress VFP desktop window fully. You can add _SCREEN.Visible = .F. to your main program to hide it but it'll be visible for a brief moment. Why can't you use config.fpw included or excluded?