Please tell us the name and location of the file that was detected. Was it in e-mail or was it a file already on the hard drive?
Unfortunately, Symantec doesn't appear to have a specific write up on that virus. But, usually you can manually delete the file after restarting the computer into "Safe Mode":
How To Start In 'Safe Mode'
After restarting into Safe Mode, run a full system scan and Norton should be able to delete it now. If not, then try navigating to the file, then deleting it manually.
It's also possible that the infected file is in the "System Restore" files. If that's the case, then you'll need to temporarily disable System Restore using the instructions below, then scan again:
How To Disable System Restore
Hope this helps.
Norton Anti-virus software has detected the virus w32.sillyp2p in my machine running xp home.
It says that the virus cannot be quarantined, cannot be removed, and access to the file is denied.
How do I remove this?