In May 2007, Bill Gates revealed that his company had sold 40 million Windows Vista licenses. During his final keynote in January 2008, Gates announced that Vista sales had crossed the 100 million threshold. In April 2008, the company revealed that Windows Vista had sold over 140 million copies. Three months on, in its fourth quarter earnings report, Microsoft is claiming that another 40 million licenses have been sold (the increase is probably due to the release of SP1):

Revenue growth was primarily driven by continued customer demand for all products, including Windows Vista, which has sold over 180 million licenses since launch, the 2007 Microsoft Office system, server software, and Xbox 360 consoles and games.

http://arstechnica.com/journals/microsoft.ars/2008/07/18/three-months-later-180-million-vista-licenses-sold-in-total

Thanks 4 d update....gr8 news !!!

Wow....gr8  "yeh hai 60 Billion $ earning ka raaz"

Vista is rocking across the World....