Libre should open simple Word files directly. If you have any content that is semi “exotic” (macros, embedded files, hyperlinks) t may or may not work, however. Macros will very likely not work as the programming language between the two platforms is different. Save the file in the native Libre format. Once you’re convinced that everything appears normal, you should be good to go.
For most users it would not be a problem to select this printer. Do so for the virtual printer “Microsoft Print to PDF” and that is how you would get a printed document. How to use the printed document Before you print it, you need to print the physical document to the virtual page size ‐.1 inch on the default page size ‐.5in. The “print to PDF” button in your OpenOffice.org document is the one you want to use. Now you are almost done.