MFC function GetUserName always return id SYSTEM when using sshd

Greetings:

And TIA.

Quick summary of my configuration:

W2K Server (Windows 2000 - Not 2003)
Latest downloads of all cygwin resources

I have successfully configured this W2K host to authenticate via publickey
(which I am aware is problematic as indicated in the following link:
http://msgs.securepoint.com/cgi-bin/get/openssh-unix-dev-0311/10.html ).
That said, whenever this W2K server machine connects to any other Windows
host (XP, W2K, etc) the return from a program which employs a GetUserName
call via MFC (Visual C++ 6.0) is always SYSTEM (as opposed to the login id
via the ssh call). So if I

ssh <host> -l <username> the login ID is SYSTEM instead of <username> NOTE:
password authentication always returns the correct <username> result. I
have confirmed the following:

1). This behavior is observed from any W2K server connection i.e.

W2K (2000) Server -> XP
W2K (2000) Server -> W2K

2). ssh calls via cygwin sshd servers running on any other Windows Host
return the expected id: <username> during publickey authentication,
including connecting to this W2K server

3). I have run the sshd process via cygrunsrv (normal default) and also
standalone (i.e. run sshd from a bash window) and there was no observed
difference. This was a bit of a suprise, since I thought that without the
cygrunsrv use, I would have expected the current user running sshd to be
identified as the user from GetUserName. This leads me to believe that the
configuration/setup process of sshd (perhaps the account sshd?) or the
binary itself is somehow responsible for this ID assignment.

I believe the issue here is the disclaimer from the GetUserName function,
i.e.

Remarks
If the current thread is impersonating another client, the GetUserName
function returns the user name of the client that the thread is
impersonating.

However why only on W2K Server?

As stated earlier, when sshd was being invoked via cygrunsrv this was
understandable given the all services are 'owned' by SYSTEM, but when I ran
sshd from a user account, I would have expected the user account id (i.e.
the -l argument to ssh), but the result (SYSTEM) was unchanged.
Bottom line: I would like to ssh to another Windows host and have the
identity on the client side to indicate the account which I am logging into.

Any help appreciated.

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