The Installshield Express doesn't have automatiom interface but it seems that Windows Installer can be used to modify ISX project. Take a look at Re: Auto set an ISE build version to match project version Thread #894568 Message #898796 and http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/installer_object.asp

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>What I am trying to do is the following: I would like to instantiate an Installshield Express object and load the Installshield project (".ISM" file), change some of the properties in that project (like Product code, Product version etc), save the project, Build the release and Distribute the release and then close the project.
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>I looked in the type libraries that sound like Installshield classes (like "ISExpProject" etc) but I could not find anything that could do anything serious with an installshield project.
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