I am currently using a sony vaio pcg-21314w and it is running with Windows 7 starter edition. My interest is to update with ultimate edition of Windows 7. But before installing it I have several doubts in my mind and I have to clarify them first. My first doubt is should I really have to install Windows 7 ultimate or just stay with starter? After installing Win7 ultimate can I run vaio updates? If the vaio updates is not possible then how can I get the driver software? Please provide me some useful information before upgrading my laptop.