TTP,

Nope nothing worthwile for sale in Fb2, Did spot some content in Russian though.
The only reason for using Fb2 is that it's FBreader XML format, which should allow you
to convert HTML with the linked illustrations (gif, jpg, png etc) into a single file.
*.lit compatibility will never happen, nor is it likely MS will release a MS reader port for
the 770, They didn't do it for the Palm so...