I noticed that in this graph it says Physical processor support Unlimited core's are supported on all editions 1 and the others 2? does that mean dual core is not supported in home and premium version? http://www.helpwithwindows.com/WindowsVista/vista-which-version.html BTW for home users that use Windows XP professional should upgrade to premium as the enterprise or ultimate is not needed? Anyone thinks that Vista premium is good enough? as the others have useless features for home users and ppl how play games etc...? Anyone thinks that premium will be the most used for hardcore gamers and home users how like advance versions? like professional in XP? even for hardcore gamers premium is good enough and also for security.