problem configurating mstsc "Virtual Channel Client Registration"

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virtual

hello guys,
i've written client and server to use on a remote desktop session.
when i update registry:

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Terminal Server Client\Default\AddIns\MyAddin]
"Name"="path to my DLL"

when i connect, client calls are passed to the server, everything works fine.
when i connect to another pc using mstsc, it "steals" the calls, and client->server calls don't occur anymore.

i thought about configurating it like this:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa383583(v=vs.85).aspx[^]

instead of "Defaults", use "myConnection".
but i don't know where to declare this "myConnection",
tried in the server:
administrative tools -> remote server desktop host configuration,
then i changed the name of the connection to "myConnection".
and the client dll is not loaded anymore...

i have no idea how and where to declare it, and use a specific server, and not default...

please help,
thanks.