Changing a PDF to a DOC file.

Is there a program, utility, or software out there, that makes it easy to transfer a pdf file to a doc file? I know its easy to find programs to change anything into a pdf, but the only thing I found to reverse it transfers it to a TXT, besides others that do BMP/GIF/JPG ect. I have forms I need to transfer back, and the originals have vanished. Well next step is to re write. Hope someone can help.