I just downloaded and installed the Norton Anti-Virus 2009 Trial Version and when I started a scan, they claimed to have detected a virus called MS RPC Network DDE BO and said that this thing is try to attack my computer! They even have its IP address and its traffic description. They said its severity is HIGH. It is coming from a file called svchost.exe from WINDOWS/SYSTEM32. Is any of this true? Please help.