Might not be the best option for you, but just for fun, I used a free online converter...this one
...to convert a .pdf cookbook (chosen since it has the tables/columns you mentioned). It did a decent job converting it to Word, even kept the table of contents links clickable, the tables and columns were formatted correctly, however, it couldn't handle the photos (they were omitted in the final document, but could be easily edited in, I guess).
There are tons of other options, of course, to be found through online searching...both free and shareware. I'd probably experiment with a few of those or ask the question on a couple of the tech forums that specialize in the subject.