Hi Romit,
Both of the command lines you posted have typographic quotes rather than straight quotes between the /V and SERIALNUMBER=. This will cause problems for anyone who tries to copy and paste these commands into their installation script.
Also, you may want to clarify that the command to create the prov.xml just needs to be run once, and that the prov.xml file can be saved in the same location as the installation media. It's just the VolumeSerialize command that needs to be run on each machine as part of the installation process.