Mike Angiulo (L), Microsoft General Manager of Planning and PC Ecosystems, shows off a new tablet computer running the Windows 7 operating system to Microsoft CEO Steve Ballmer. during the Windows 7 Launch Party in New York, October 22, 2009. Microsoft Corp. launched Windows 7 on Thursday in its most important release for more than a decade, aiming to win back customers after the disappointing Vista and strengthen its grip on the PC market. Reuters Pictures logo Reuters Pictures 28 months ago

Mike Angiulo (L), Microsoft General Manager of Planning and PC Ecosystems, shows off a new tablet computer running the Windows 7 operating system to Microsoft CEO Steve Ballmer. during the Windows 7 Launch Party in New York, October 22, 2009. Microsoft Corp. launched Windows 7 on Thursday in its most important release for more than a decade, aiming to win back customers after the disappointing Vista and strengthen its grip on the PC market.