Windows Vista Upgrade Advisor
is a tool to guide you in choosing the edition of Windows Vista that will be best suited to your hardware. The review will also identify those devices and the software for which an update will be required to work correctly after the migration to Windows Vista.
The software allows you to first determine your needs as you need the Aero interface and Media Center functionality or advanced data encryption.
Upgrade Advisor will direct you to one of the editions of the operating system.