Microsoft accepts orders for upgrade to Windows 8

The window to upgrade to the next version of Microsoft's computer operating system is now open. Microsoft Corp. began accepting orders for Windows 8 this week. The new operating system won't be delivered until Oct. 26, however.

The window to upgrade to the next version of Microsoft's computer operating system is now open.

Microsoft Corp. began accepting orders for Windows 8 this week. The new operating system won't be delivered until Oct. 26, however.

People who own a personal computer running earlier versions of Windows can buy the revamped system for $14.99 to $39.99.

The lower price is being offered to PC owners who have bought a machine powered by Windows 7 since June 2. Everyone else with a Windows-based computer will have to pay the higher price if they want to upgrade.

The chance to upgrade at these prices expires Jan. 31.

Microsoft designed Windows 8 so it can power both traditional PCs and tablet computers in response to the iPad's popularity.