Most people who need a PC for work or home use already have one -- and sometimes more than one. But manufacturers are now hoping to persuade us that PCs belong in the living room, as well as the office and the study. Much of the impetus stems from the recent release of Microsoft’s Windows XP Media Center Edition 2004, but Sony, as ever, is doing things its own way. The elegant VAIO PCV-W1 runs regular Windows XP Home and uses a bundle of Sony’s own software to access its TV and other multimedia features. The result is an undoubtedly desirable PC/TV hybrid, but there are enough drawbacks to give pause for thought.