I have been finding more ways to open more Windows files that have had very little support in Mac OS in the past.
OpenOffice.org 3.0.1 is a free office sweat that can open old and very recent versions of Word Perfect, from Windows, files.
NeoOffice 2.2.5 is a free program that can open MS Works, from Windows, files quite well on a Mac.
One other handy tool is a web site:
With the web site, "conv2pdf," I can upload a MS Publisher file from Windows, or a MS Works file and it sends it back as a PDF version to me, perfectly formatted, and it's free.