Um.... I've got Windows 7 RC 7100 x64 set up with my own little version of XP Mode on it. Can I install ESS on a Virtual Machine OS and get all the updates and such with my current 1 User license on the host system that has ESS installed on it? Or do I need to purchase another User license. Or do I even need any Antivirus or Security applications installed on it if I intend to surf the internet with it? I'm not sure how far the Integration of XPVM with the Windows 7 host goes as far as protecting the Virtual Machine with the host's Antivirus/Security apps.