A PDF is just a collection of images, meaning you can't edit the contents in their native format; you could opt for a utility that converts a PDF file into Word-friendly text. PDF to Word Converter is an easy-to-use application, which is specially designed for converting PDF to word 2007 (.docx) and 2003(.doc) documents.

PDF to Word Converter (currently beta) from Anypdftools is reasonably fast and the resultant output is also accurate. It preserves the original layout of your PDF file in an editable Word Document.

Main features of this program are:

1. Partial conversion: select any pages from the PDF file to convert.
2. Right-click conversion - Convert PDF to Word without launching the program.
3. Support converting encrypted and password-protected PDF files
4. The original layout, text content, images, and hyperlinks can be exactly retained in the generated Word documents.

You can download PDF to Word Converter (beta) from here (required registration key which is available free from the site)

If you like you can opt for any of these two free online services for converting PDF documents in to Word. 1. Viewdocsonline, 2. PDF to Word converter.