Cryptowall 2.0

All excel and word files have been encrypted by Cryptowall on my Dell Latitude D610 laptop.  I believe this action was completed before I installed Norton 360 AV software.  I ran the Norton 360 AV software several times but I cannot determine if the Cryptowall virus has been removed.  When the Norton 360 scans were completed and I received the scan status, the Cryptowall virus was not identified as one of the removed files.  How do I determine if the Cryptowall virus has been successfully removed?

Second question - now that Norton 360 is installed, will it stop any new Cryptowall virsus installation assuming I can successfully remove the current Cryptowall file?