Hyper-V Program Manager
The Virtual Server Administrator's guide outlines how to perform a basic unattended installation of Virtual Server. However it does not tell you how to do a customized unattended install (where you only install some of the components). You can do this with the following command (all one line):
msiexec /I "Virtual Server 2005.msi" /L*v %TEMP\VS2005Install.log ADDLOCAL=VirtualServer,VMRCClient,DevAndDoc,VSWebApp PIDKEY=#YOUR_PID_WITHOUT_DASHES# /qb-
Where you remove the components from 'ADDLOCAL' that you do not want installed. So if you just wanted the VMRC client you would run:
msiexec /I "Virtual Server 2005.msi" /L*v %TEMP\VS2005Install.log ADDLOCAL=VMRCClient PIDKEY=#YOUR_PID_WITHOUT_DASHES# /qb-
Note: To get the .msi file with Virtual Server 2005 R2 you will need to run Setup.exe /c /t [drive letter]:\[path to the .msi file].