[HarryT]

Originally Posted by wallcraft

For PDFs, use ineptpdf.pyw. The DRM-free PDF can be read directly on a Kindle or Nook - or you can convert to MOBI/ePub using Calibre.

It has to be said, though, that PDF files rarely convert well to other formats. A considerably amount of manual editing is generally required on the resulting file to get a good result.