I have a Sony Vaio Laptop running on Wndows Xp SP2. The model is PCG-FR415m which i have had for a long time and is an out of date model. I wanted to put a larger amount of memory in than the 512mb it has at the min but specification states that the MAXIMUM amount of memory is 1.0 GB is this the case or can i go beyond that as I've seen a 2gb memory module compatible with my model? Many thanks