Hi
A lot depends which version of Adobe Acrobat you are using for your pdf file. If it is acrobat 5 you can save it as rtf or html and bring it in to Word that way.
To get from FrameMaker to Word you can either save as RTF (use the japanese rtf option at the bottom of the pull-down menu) or use a third-party tool like mif2go which gives excellent redults but costs about 250 dollars. Don't use the save as Word option as this invariably crashes after sitting doing nothing for ages.
I would like to know how you intend to get from pdf to FrameMaker though, I know that you can import pdfs but only as images not as tesxt, or so I thought.
Best of luck
Lledod