The NetBackup for VMware Guide is your friend: ftp://exftpp.symantec.com/pub/support/products/NetBackup_Enterprise_Server/340112.pdf
Please see the license requirement on p.17:
NetBackup for VMware requires the NetBackup Enterprise Client license.
All NBU 7 manuals can be downloaded from http://seer.entsupport.symantec.com/docs/341274.htm