In order to create the .MSI installation package, a 3rd party tool named "Advanced Installer" is required. (This is the tool that uses the "/spark/build/installer/spark.aip" file.) The web site for this tool is http://www.advancedinstaller.com/ At this time (November 6, 2009), there are 4 different editions of this tool: Enterprise, Java, Professional, and Free; see http://www.advancedinstaller.com/feats-list.html.
(1) In order to simply build the .MSI installer package, which edition is required?
(2) In order to modify the spark.aip file, which edition is required?