Hoping to revive its notebook fortunes, Sony unveiled a laptop that can connect to the Internet pretty much anywhere in the United States. The Vaio VGN-T350 comes with an integrated cellular module that can connect to Cingular’s network. The service costs $79.95 a month for unlimited use, but it obviates the need to seek out an available hot spot to connect to the Internet. WiMax technology one day will likely provide similar blanket coverage, but it will take some time to build a WiMax network. Consumers can also opt to pay $49.95 a month for 50MB of data a month. A switch lets users alternate from Wi-Fi to cellular connections to conserve cellular time.