you use vista ultime?im ols whate i need for chang to windows7 ?

You could use Windows 7 upgrade , Windows Vista ultimate could be Upgarde to Windows 7 Ultimate.Just buy upgrade version ot get full package and chose upgrade.

The Windows 7 Upgrade Advisor scans your PC for potential compatibility issues and lets you know about your Windows 7 upgrade options. Within minutes, you'll get a report that tells you if your PC meets the system requirements, if any known compatibility issues with your hardware, devices, and installed programs are found, and gives guidance on what to do to before installing Windows 7 on your PC.Carey Frisch