This document will provide you with the details and information that you need to make the right decisions about how to migrate to Windows 7. This document includes the details on what upgrade paths are supported, and which are not. In addition, there are links to technical resources that can help you plan and manage the migration of your client systems without problems or other issues that might cause costs to rise or for the project to be delayed.
Upgrades to Windows 7 from the following operating systems are not supported:
• Windows 95, Windows 98, Windows Millennium Edition, Windows XP, Windows Vista RTM, Windows Vista Starter, Windows 7 M3, Windows 7 Beta, Windows 7 RC, or Windows 7 IDS
• Windows NT Server 4.0, Windows 2000 Server, Windows Server 2003, Windows Server 2008, or Windows Server 2008 R2 READ MORE