There is no way to install any of these pre-beta versions of Windows 7 on a production computer or on a business network safely. Doing so would be insane and a very bad idea. Wait until the final release! On a large network it is difficult to do a big migration from XP to any other operating system. I work in a department where I am the only member of the IT Department, besides the head of the department. If I was asked to upgrade every Windows XP machine to Windows 7. I cannot even tell you what a job it is to get 50+ computers upgraded to XP SP3. I don't know where what I am writing is leading, but I am sure Windows 7 will be a better operating system than XP, but there are still so many systems that are Celerons and Pentium 4's running with 256MB of RAM on Windows 2000 and XP.