I know the Adobe website has some conversion services but I am unsure if they will convert TO a .doc format. You will have to register an account to be able to access their conversion services.
i would check, but I am mobile currently

http://www.pdfonline.com/pdf-to-word-converter/index-b.htm

Welcome to fluther!

Do you have adobe reader? If yes, then open the document, Edit->Copy file to clipboard. Open Word, paste. This way whole document gets into word.
If you want to take out only few pages or paragraphs, you can use, in Adobe reader, Tools->Select and Zoom->Select (to select text) or snapshot (for taking picture by drawing rectangle).
This works when pdf is created from text, such as word. If it is created from scanning, then this won’t work. You need to get it done through optical character recognition (OCR) software.
There are many online free converters available. Here I googled it for you.