There's no two ways about it -- Microsoft has moved a truckload of Windows Vista licenses. That said, just 10 percent of all PCs within enterprises in North America and Europe use Vista, with the vast majority sticking to what has worked for years: Windows XP. Company CEO Steve Ballmer had quite the zinger on this topic during a recent interview at an NYC interview to mark the extension of Microsoft's collaboration with EMC, and we're certain you'll love it. Here goes: "If you deploy a four or five-year old operating system today [Windows XP], most people will ask their boss why the heck they don't have the stuff [Vista / Windows 7] they have at home." Of course, a one-off remark from some chap that's not at all pertinent to the day-to-day operations of a company isn't apt to make a business owner rethink their approach to running their own show, but we're sure it's fun for Steve to think that only a handful of consumers out there are still relying on WinXP.