My experience is that after a while LMCE will detect "itself", you need to specify it as a file server.
Once that is done it will list shares on that server, then you simply allow the harddrive/folder you want to be a "share" (if you have shared something there).
It will also detect core HDD, but I am not entirely certain how well that works, as it detected my USB stick as core HDD (not really a problem though)