What services does Symantec antivirus use?

I'm running Antivirus Corporate Edition 8 on a Win2000 server and there only seem to be two Symantec services running.  Is this correct?  If there should be more then what services does NAV 8 use?

 

Oh, I know that this is an old version - an up-to-date AV will be installed shortly.  An answer to this question would be REALLY appreciated though.  Thanks.