Jambaleia, I emailed you directly, via this Forum, with some details about making an SMB connection. Did you see that and did you try them? Many of us have had to figure out some of the details on our own but we are on this forum to help others, as well as get answers to question. Let me know if you got the email (check your user Control Panel) and if there was anything useful in the specifics of creating an SMB (or AFP) share.
I was using the wrong parameters for awhile and thought the ATVFlash was working. It was and as with any software, since they are using other supplied programs, like NitoTV, we have to live with it if we want the benefits.
I think they can be faulted for not having step by step instructions.
See if the following helps;;