http://www.installaware.com/hoplite.zip
You can use hoplite.exe to create a MIA script file from a WSE project file

The first command line parameter to hoplite.exe is the full path to the WSE project file. Even if the path contains spaces, DO NOT use " (quotes) around the path, this will break the hoplite.exe tool.
Hoplite outputs a .MIA InstallAware script file in the same folder as the WSE project. You can then set this script as your project script file to view and build it in InstallAware. Of course, the final version will produce a complete InstallAware project, but this is what we have available for testing now.
To set the script in your project, open the Project Manager, then select the script file, right click it, and choose the change menu option.