I need an NSIS installer that will install 2008 SQL Express for Windows XP Pro or 2012 SQL Express if Win7, or 8.
It will not cause the computer to restart.
It will install all required packages including .net, and Windows Script Host if needed and power shell if needed. (And any other pre-requisites)
The service will need to be started at the end of the installation so a database can then be installed.