InstallAware

How do I remove a specific instance of SQL Express ? I saw a response in another post that said you could do it with the (Un)Install MSI Setup, but I cannot find the package name. Can an uninstall be done with the SQL Express option in the Application Runtimes window ?

You should read the SQL Express documentation for information on uninstalling a specific instance. You will need to use MSIcode and script the required actions for uninstalling your instance.