Not easy to do reliably.

If it's a small document with simple formatting you could try selecting and use copy-paste. If you have a large but simple document then Adobe Professional will let you save as an RTF file which you can read directly into WORD. But either method you should be prepared to do a LOT of editing.

Alternatively do a search for a utility, I'd be amazed if one doesn't exist somewhere.

Good Luck!

well , try Zamzar - Free online file conversion . The tool is perfect.