I received a call from this number (404-410-2396) today and the lady said she was a Microsoft support person and there was a virus reported from my computer.  I wasn't at home so she called back later when I was and asked me to get onto my computer.  She wanted me to "run" something or remote into my computer so she could show me the corrupted files and how to remove them.  I hung up and my friend from IT at work confirmed it is a SCAM...checks out on Snopes http://snopes.com/fraud/telephone/microsoft.asp