Using Frame in the epub process

[Theresa de Valence]

I’ve a 75,000 word story (fiction) which I’m trying to turn into an 
ebook. I use Calibre (www.calibre-ebook.com) for my ebook library 
management which will also convert files to epub. The problem I’m having 
is figuring out how to get the file in the right format before I give it 
to Calibre’s input Plugin which then converts the file to XHTML. Calibre 
takes that XHTML and returns an epub and then converts that epub to 
multiple ebook formats.

Can Frame create the XHTML? Should I be using structured Framemaker? Do 
other people on this forum publish ebooks?

Thanks for your advice.