I run setup.exe for msoffice97, and i got dialogbox : tittle = "Setup Error 530" message = This is an invalid command line option: button = OK when i pressed OK shows another dialogbox: tittle = Setup - Usage message = Usage: setup [/A] [/G filename] [/Q[[0[1][T]] [/R] [/U[A]] [/X filename] [/Y] /A Administrator mode /G filename Generate logfile of installation activity /Q[[0[1][T] Quiet install mode (0 shows exit, 1 hides exit, T hides all display) /R Reinstall the application /U[A] Uninstall the application but leave shared components (/UA to remove all) /X filename Set Network Log Location for tracking install instances /Y Install without copying files button = OK when i pressed OK it is terminated