Windows 7 launch is just hrs ahead, Microsoft with OEM partners introduces a series of limited-time offers with great deals on hardware, software, upgrades, support, and other options, called as "7 Days of Windows 7." Microsoft’ll roll out new deals each day on Windows site. On Day 1 offer include: Dell Studio XPS 13 with $100 discount; All-in-one Acer Gateway ZX6800 23" for $899. Deals’re also available for people planning to upgrade existing machines to new operating system, without buying a new PC. Microsoft is offering Windows 7 to college students for $30 via this page. Windows 7 Family Pack is also available while supplies last.

Also, you can win Windows 7 PC via ‘How would you change the world?’ using Window 7 contest; Record a video of yourself explaining your idea and submit it here on the 7Ways to Change the World website, until Nov 11th. The 7 people with the best submissions, as chosen by our judges, will each win a new PC running Windows 7.