Disconnect the machine from the network
Update the definition with the latest RR
reboot the machine in safe mode
Run a full scan. This should take care of the virus.
If you still find malicious activity you can run a LPDU & submit the log to Symatnec.
How to use the Load Point Analysis within the Symantec Support Tool to help locate suspicious files http://www.symantec.com/business/support/index?page=content&id=TECH141402