>Hi Mahmud
> How about using the command line feature of WinZip
> Example:
> Run C:\Progra~1\winzip\wzzip -rpu MyDir\MyZipFile.Zip
>
>Rasheed

Hi,
you can use ShellExecute in Shell32
see VFUG.org April 2002 Letter
MkZip.prg explains how to manage parameters.
Arnaud