Im not sure which Windows Vista operating system I have. How can I find out?
The easiest way to find out is to go to you Computer icon on the desktop, right-click on it and choose properties. This will tell you which version you are running, how much RAM your system has and who the PC is registered to.
If for some reason you don’t have the icon on the desktop, click on the start button in the lower left corner and when the menu comes up look to the left for computer and once again, right-click on it and scroll down and choose properties and it will take you to the same place.