for nearly every Sony Vaio model use the ASIAN Site -- they've even got hard to find stuff like the drivers for the Dual Sony MMC SDHC card reader. Original Drivers and Applications for VPCEH/EJ Series (Windows 7 64-Bit) : Download : Sony Asia Pacific
(Other models too -- I was just chasing down stuff for a model I've been using).
Forget about those VILE sites that sucker you in to "Free Driver Search" -- and when they find something you have to PAY to access the relevant area (We call this stuff "Sneakerware" and it's becoming more and more prevalent - they say FREE DOWNLOAD-- but that's all that's free is the Download !!!!!)
Don't use DriverMax or sites like those any more. All this stuff is FREEWARE anyway.