Windows 7: A worthwhile upgrade?

Will Microsoft's Windows 7 succeed where Vista failed? The new operating system offers a new graphical user interface, more reliable power management tools, and better search, but it still might not offer enough to convince PC users to buy it. ZDNet Correspondent Sumi Das talks to Larry Dignan, editor in chief of ZDNet, and Ed Bott, ZDNet's Microsoft Report blogger, about Windows 7's pros and cons.