The usual location to get drivers for a Sony Vaio is at the Sony website. But nothing pertaining to the webcam was listed under the Download tab. All I can suggest is to use their Contact Us link at the lower left of the webpage and ask customer support where they've hidden the webcam driver.
Computer type Laptop System Manufacturer/Model Number Sony Vaio VPCEB47GM Laptop OS Win 7 Pro 64-bit CPU Intel i5 2.4 Ghz Memory 8GB DDR3 Graphics Card Intel HD 3000 Sound Card IDT High Definition Monitor(s) Displays 15.6 WGXA Anti-Glare LED Screen Resolution 1280x800
Hard Drives 640Gb 7200rpm Antivirus MSE Browser Opera (primary) with IE9 backup