fist of all... this is the xeon forum.
so this would be for all the xeon emulator things... not for cxbx.
Cxbx, xeon and dxbx are not playable with fable.
other thing.. you need something to get the game into your pc.
the format of xbox dvd is not standard with pc... like fat32 or ntfs. the xbox has something like fatx. this is not supported by windows. so you can not read the files from the xbox disc directly into your pc.
how this needs to be done can be found on forums like the ones of xbox-scene.com