Using Netmeeting COM interface in C# client

I am trying to use the NetMeeting COM interface in .Net/C# client.
When I im****ted Tlb file (generated from imsconf2.idl file available
in NetMeeting SDK) in C# client I realized that not all the COM
interfaces are im****ted in the C# client.
As per my requirement I need to have access to all the interfaces of
NetMeeting COM API interfaces at C# client side.
If someone has already experienced the problem and know about any
possible solution let me know.

Thanks