I just bought a Sony Vaio from Sam's, it is the small 10.1 inch screen. I really like the size, but the performance is not what I wanted. For the life of me, I can't find a place where I can buy some extra RAM. I have tried google and I keep coming up empty. The model number is VPC M111AX/W. If someone could give a little advise, I would be very thankful.