iTunes reports that "This iTunes installer requires that your computer is running Windows XP or Windows Vista"
Symptoms
The message below appears when attempting to install iTunes 7.4 or later on a PC running Microsoft Windows 2000.
Products Affected
iTunes 7 for Windows, iTunes 8 for Windows, Microsoft Windows Vista
Resolution
iTunes 7.4 or later is only supported on Microsoft Windows XP (Service Pack 2) or Microsoft Windows Vista. You can download iTunes 7.3.2, for use with Windows 2000, by clicking the link below.
Note: Apple has no plans to release iTunes 7.4 and subsequent versions of iTunes for Windows 2000.
Additional Information
For information about the system requirements for the latest version of iTunes, see the iTunes download page.
Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.