ViewSonic is expected to jump into the desktop PC market this week when it unveils a computer running Windows XP Media Center at the Computer Electronics Show in Las Vegas. Known primarily as a monitor manufacturer, the Walnut Creek, Calif.-based company in recent months has expanded into computers as a way to defend, and even enhance, its position in displays. By designing and marketing its own computers, the company can highlight the advantage of its CRT (cathode-ray tube) monitors and flat-panel displays. For years, the company's marketing slogan was "ViewSonic on top," a takeoff of chipmaker Intel's advertising tagline, "Intel inside." Read more: CNet News.