Operating System: Windows XP (Note: might work with other versions of this os.)
VGCRA820G, VGCRA822G, VGCRA825G, VGCRA826G, VGCRA828G. It was also distributed with other model VAIOs like my later model VGC-RA837GY. This led to a lot of confusion about where to find the driver for the keyboard, because the only driver listed for my model is described as an "Original - Sony® Wireless Keyboard and Mouse Driver". My computer did NOT come with a "wireless" keyboard, it came with the PCVA-KB7P/U (wired) Sony VAIO keyboard. This driver is for an English language keyboard, unlike the other one available at this site. The other driver is for a Japanese keyboard and will not work with an English language keyboard like this driver will. Note though, that this driver is ONLY for the Microsoft® Windows® XP Media Center Edition operating system, since some of the special keys on the keyboard only work with Media Center. I just installed this driver on my computer earlier today and for the first time, I'm able to use all the special function keys on my keyboard. Enjoy!