Using Office Automatic Configuration Script, you can create unattended setup file, When you will create UNATTENDED file, use the following syntax to run setup using custom unattended file.
To run setup from Network.
msiexec /i \\192.168.0.1\softwares\office2003\PRO11.msi TRANSFORMS=zaib.mst /passive
To run setup using local drive.
PRO11.msi TRANSFORMS=zaib.mst /passive