This could be done with a plugin (or two). If anyone has done this, I would be interested as well. It's on my list of modifications to attempt but I haven't got to it yet.
Currently the only option (which I have tried) is to use GT Community http://www.gossamer-threads.com/.../community/index.htm which will do exactly what you asked.
Simon.
Currently the only option (which I have tried) is to use GT Community http://www.gossamer-threads.com/.../community/index.htm which will do exactly what you asked.
Simon.