So I've installed Windows 7 in a virtual machine and I have to say so far I absolutely love it. I got to admit I've only been running it for a couple hours but normally it takes 2 - 3 hours to migrate all your "configuration settings" into a new Windows OS. Microsoft has finally hit the nail on the head with this release. So far it's just a solid clear installation and not obstructive to your working environment. I will be installing it on a few of my systems here in the next few days and should have a better idea how much I like it.