How to generate clickable pdf from microsoft word?

I am working on a document with several images. I would like to refer to them im the document in other sections and hence have used cross references well. But, the links are not working. When i click in the document the link directly takes to the referenced image but once i export to pdf file format directly from the microsoft Word options, the links no longer work. I want the click behaviour retained in pdf file too. Can any body help me in this issue and provide any hints or tools which i can use to get rid of this problem
