Microsoft decided to end Windows Anytime Upgrade, the company's online upgrade process to the Premium version of Windows Vista.

"In an effort to streamline the Windows Anytime Upgrade experience for our customers and open the program to additional markets worldwide, Microsoft and its partners have decided to end digital product key distribution on February 20, 2008," Microsot said.

Microsoft will continue to make Windows Anytime Upgrade kits?which include a DVD and license that allows customers to upgrade their existing edition of Windows Vista to a premium edition?available directly from Microsoft (except in Japan) as well as local retailers throughout North America, Europe, Asia, and Australia.

All digital keys purchased through February 20, 2008 will remain valid for upgrade.

For additional information visit http://www.microsoft.com/windows/products/windowsvista/buyorupgrade/windowsanytimeupgrade/overview.mspx.