You can use MSMQ unattended setup to install all types of dependent clients, independent clients, and servers (including a PEC). MSMQ unattended setup is controlled using a file called Msmqinst.ini. The Msmqinst.ini file can be stored in either the source MSMQ installation folder on the server or in the Windows folder (typically c:\Win95 or c:\Winnt) on the destination computer. If both files exist when you run unattended setup, Setup uses the Msmqinst.ini file in the Windows folder. When MSMQ servers are installed with an installation share, a default Msmqinst.ini file is created in the installation share folder.
The Msmqinst.ini file specifies default options for all computers in the [Common Parameters] section. Optionally, other sections named for specific computers specify settings that override the common settings. For example, to install MSMQ on twenty computers using unattended setup, install a PEC with an installation share, modify the Msmqinst.ini file on the PEC's installation share, and then run unattended setup on each computer.
Because the site controller's computer name is required to install every independent client and server, it is easiest to use separate Msmqinst.ini files for each site. You can use a single Msmqinst.ini file for multiple sites, but you have to create entries for every computer that is not in the default site.