NEW YORK - If you just bought a DVD-burning drive for your computer and think that for once you're current with the latest and greatest, it's disappointment time. Manufacturers are soon launching drives that can store double the amount of data on a disc. Sony Electronics says it will be shipping drives in about two months that accept blank DVDs with two data layers. Philips Electronics will start selling a similar drive in Europe in April, but is not saying when it will be available in the United States. The write-once discs can store up to 8.5 gigabytes of data, or about 4 hours of DVD-quality movies, twice the capacity of regular blank DVDs. This means capacities for computer-burned DVDs are catching up with prerecorded movie DVDs, many of which are already dual-layer. Read complete story here.