Windows Vista is finally here!

Microsoft's long-awaited Windows Vista operating system will become widely available to consumers tonight and the world will be watching to see how well it sells. Retailers like Comp USA and Best Buy will be opening some stores early, using a tactic typically reserved for video-game consoles. The software can be purchased either alone to upgrade older computers, or comes included on new PCs. The software giant is putting its considerable marketing might behind the long-awaited upgrade to Windows Vista, with appearances being made by Chairman Bill Gates and CEO Steve Ballmer.