Hi Bob,
You can export from PDF to Word if you own a copy of Acrobat X Pro or Standard, and there is no file size limit as there is in the online services.
There are also third party tools that can do this ( Google Export PDF to Word) but I don't have any direct experience with them. I don't believe any of them are perfect ( i.e., you get a prefect Word doc result) including Acrobat, but Adobe has done quite a bit of work in this area and really improved it in Acrobat X.
http://www.adobe.com/products/acrobat...
Hope this helps,
Dimitri
WindJack Solutions
www.pdfscripting.com
www.windjack.com