I had the RC1 beta set for the Vista Ultimate selection and am currently running the Home Premium edition on the second drive here to multiboot with both 32bit versions of XP. Other then the expected bugs seen with any brand new version of Windows it has been running like any other other version where there's the initial lack of drivers available. One thing to add here adds to what kof2000 has mentioned about memory. It boots and runs normally for the most part with the 2gb of Kingston Value Ram. Those extra new features do grab a little more then seen with XP.