This can be achieved with the following:
start /wait VMware-vcserver.exe /s /w /v"/qr WARNING_LEVEL=0
LICENSING=custom VPX_LICENSEPATH=27000@hostname.domain VC_EDITION=vc DB_SERVER_TYPE=Custom DB_DSN=\"VC DSN\" INSTALL_VCI=\"\" REBOOT=SUPPRESS"
Of course, if you run that on a command line, you don't need to escape the quotes with a backslash. Also there are some other things that must be setup first... creating the database and DSN in advance etc, I'm putting together a little video to demo that so stay tuned!