We are using Symantec Antivirus. When we are using Microsft Virtual PC a process called rtvscan.exe is using around 50,000K of memory that we wish to release to VPC. When we are using VPC we are not connected to the internet or network so we do not need Symantec Antivirus. How can I turn it off? I have tried disabling and rebooting but rtvscan.exe is still there.