单项选择题

Windows Vista, the latest iteration(重复) of Microsoft’s operating system, is finally here. It was officially released to corporate users last week and will be available to consumers on Jan. 30. But now that Vista is ready, will your computer be And what will be involved in an upgrade
Microsoft says Vista offers increased security, along with an improved search function, an excellent calendar program, improved networking and a sidebar with quick access to min-programs called gadgets. With the right display adapter, some editions of Vista will also offer a new interface called Aero that lets you preview what is inside a running program by placing your cursor(光标) over its thumbnail in the task bar.
It will be possible for many PC users to spend $99 to $259 to purchase a Vista DVD to upgrade their existing Windows XP machines. But before you do that, you need to take a good look at your PC as well as your peripherals(外围设备) and software. If your system isn’t quite compatible, it might be possible to make it ready for Vista with some additional memory or perhaps a new video card.
Even if your PC is Vista-ready, that doesn’t mean you should buy the upgrade kit. For most users, especially those whose hardware isn’t quite up to speed, it might make sense to wait until it’s time for a new PC.
The easiest way to get Vista is to buy a new PC after Jan. 30. If you want a new PC sooner, make sure the hardware is Vista-ready and see if the vendor is offering a coupon for a free or low-cost upgrade when Vista comes out. It is essential to compare the cost of buying a new system against purchasing Vista and upgrading your current PC. By the time you add up the cost of Vista plus any required hardware, it might make more sense to get a new machine.
One variable for those thinking of upgrading is Vista’s system requirements, which vary by edition. Microsoft will offer a $99 Home Basic Edition that provides limited functionality but runs on more basic equipment. Unlike the higher-end versions, Home Basic won’t support the new Aero interface.
If you’re reluctant to upgrade, don’t fret(烦恼). If Windows XP works for you now, it will continue to work long after Jan. 30. Besides, Vista isn’t going away anytime soon. Whether you want to or not, you’ll probably he using it on your next PC.
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