Errors using ICertView connection from Windows 7 to Server 2003 SP1

Hello!

I have a RootCA on windows server 2003 SP1. I connect to certificate store remotely using ICertView interface from Certadm.dll to retrieve issued certificates. This scheme works fine from windows XP, but when I call method openconnection (no matter which way: from powershell, certutil, from code directly) I get following errors: 

1. from host not in AD domain  "CCertView::OpenConnection No more data available. 0x80070103 (WIN32/HTTP: 259)" 
2. from AD domain joined host error is "0x800704C7 The operation was canceled by the user."

However, ICertAdmin interface works on Windows 7 without any problems.

Someone tells me that few years ago hi had checked this scheme and it`s worked! 
after this article http://support.microsoft.com/kb/892500 I have a suspicion thah installed SP1 broke DCOM permissions. I configure permissions on COM host according to this article but connection won`t work... 
On Windows 7 I have used 2 versions of certadm.dll - native windows 7 and from Server2003 - all the same :( 

Can somebody help me make this work or explain why it is impossible?

Best regards.

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-- Stanislav.