M$ Word + PDF = very crappy output.
There's not much you can do about that, MS is good at *.doc and to a lesser extent *.rtf that is all, PDF has never been a Microsoft strong point just look at MS Publisher (I hear designers all over the world cringing).
Most of the problems with MS PDFs is that they are not fully translated (or supported by Word), it can happen with images, fonts, text layouts, etc, besides redoing the images there's not much you can do.
Unless you absoluting have to have MS Word do PDF I'd steer clear of Word documents saved as PDFs.