That would be good advice if it were sound. Sony no longer supplies chipset drivers or drivers for many older Vaio/PCs that they sold and should be held responsible for.
That is why I always tell friends NOT to buy proprietary products like Sony, Apple and so forth. I used to sell electronics many years ago and Sony was the bane of my existence at times. Even their home phone products were a pain in the arse!
That being said, I am not sure what to do either. I inherited an old Vaio PC with 128 mb RAM and re-installed a Win flavor on it, only to find that I can't get the Ethernet controller drivers from Sony. I got the motherboard number/model and all that, but I have yet to find the info I need. I got the whole PC open up on the floor right now and I can't find anything listed near the Ethernet plug that is soldered onto the board, only the motherboard number.