OK, sorry for the delay but I did it.
I just changed 2 methods from the file fbci.class.php:
get_fan_page()
get_wall()
Simply, now you can separate the Facebook IDs with a comma, without spaces.
Those 2 method changed, I simply exploded the list of ID and made a loop for getting all ID comments.
Now, I can’t find where I have to go to upload it…