December 18 - 1:20pm EST   Dell today began taking orders for its long-delayed Latitude XT convertible tablet PC, putting the system within closer reach. The Texas PC builder distinguishes the system with a more advanced capacitive touchscreen that is both more precise than most such displays while also offering a comparatively bright, thin LED-backlit screen with the standard model. In a departure from most of the company's lineup, however, Windows XP Tablet Edition is installed by default; using Microsoft's newer but more demanding Vista Business is free but remains an option. [full story]