To enable render of Microsoft Word and Excel files to PDF using Projectwise Interplot Server, we need to install Ghostscript on the application server that has the Projectwise Interplot server.
You will also need Microsoft Word and/or Excel if you plan to create PDF files from Microsoft Word and/or Excel files. It is not required for creating a PDF from a DGN/DWG file.
The Ghostscript portion required is opensource software available on the web. The version we used in our test environments can be found at http://www.ghostscript.com/download/gsdnld.html
This page includes versions for different Windows OS (32 and 64 bits).