I have updated my link to my 0.1 release of the XULRunner Application Packager (XRap), it can be downloaded here. Its still buggy, I am still working on the XML shema, and making an executable to run the actually XULRunner app, i need that executable so I can append to the Start Menu-> All Programs folder.
|C:\XUL> XULRunnerApplicationPackager.exe RootFolder|
Where RootFolder is the root folder of your XULRunner based program.
Currently when the command is run, it will create an XML file of the folders and files within the programs root directory passed. Once the XML file is created it is passed to Windows Installer XML (WiX), which compiles and links it using two programs called Candle and Light, respectively. Once compiled and linked successfully, the msi is created. When the msi is run, the program will automatically install the application to the C:\Program Files\ folder, I am currently hard at work on finishing the UI based installer, so that the user can select where to install the program.