I have an Advent 3112 pc which was probably bought from PC World some years ago. It had XP Pro on it when I was asked to look at it. Windows has since then become unloadable so I tried installed XP SR3 Home Edition ( as the label on the box is for Home Edition) but it's an OEM version and doesn't seem to be obtainable any more. Can anyone tell me if it's possible to reinstall Windows (pref XP Pro) onto this machine and do without the OEM Recovery media?? What is it that the OEM manufacturers do that makes it impossible to install anything but the version originally provided? CAn it be bypassed?