eBooks, EPUB, using FrameMaker

[rinch at Inficon.com]

The CEO of my company has asked that I look into eBooks and the EPUB 
standard. He sent me the link:

http://www.adobe.com/products/creativesuite/design/crossmedia_resources/ebooks_software.html

I know nothing about this, so I'm on a real learning curve here. The first 
thing I notice is that Adobe is pushing InDesign as the vehicle to create 
eBooks. This is a real stumbling block for me. We've got over 15 years 
invested in FrameMaker and all our docs are created and maintained in 
FrameMaker. My "books" are delivered as PDFs.  I am loathe to shift from 
FrameMaker to InDesign given our extensive history with FrameMaker. 

My question is, can I create eBooks and EPUB documents from FrameMaker, or 
am I truly locked in to InDesign for the eBooks and EPUB standard? If I 
can use FrameMaker, where would I find information about using FrameMaker 
to create eBooks and EPUB documents?

Thanks!
Richard