While the many PASS™ forums offer access to experts in the NeuroCARE® field, there are two open-to-the-public forums that are worth consdering.

The Neurofeedcommunity forum.
This neurofeedback group is the first public group dedicated to neurofeedback. It also serves to bridge the gap between cutting-edge non-linear dynamical approach to neurofeedback and the more traditional states-of-the art of classic EEG feedback. All interested parties, consumers, practitioners, manufacturers, software developers and theoreticians are invited to offer the benefits of their perspective -- classical or otherwise --to those entering the field, while enjoying shared community with colleagues.
Nonlinear Dynamical Systems (NDS) theory has much to contribute to our understanding of the EEG, which can be viewed as an emergent phenomena arising from the underlying processing of the Central Nervous system. Moreover, NDS offers profound insight into behavior in its broadest sense, the EEG's incredible interactivity with other systems and the dynamics underlying transformational and developmental processes. NDS is inter-disciplinary, cross-cultural and spans all scientific domains.
Our Neurofeedcommunity group is unique in being totally dedicated to neurofeedback, and is governed by a process of group moderation according to the principles of non-violent communication. All individuals willing to contribute to a mutually supportive community are welcomed! http://health.groups.yahoo.com/group/neurofeedcommunity/

The Zengar NCP forum.
This is a public discussion forum for users of NeuroCARE®, centered around its use as a neurofeedback training tool.
http://health.groups.yahoo.com/group/zengarncp/