Open Conversation Window with Office communicator Automation

aavio

Hi,

I am using NAV 5.0 and Office Communicator 2007 R2. I had installed Microsoft Office Communicator 2007 SDK. Using the office communicator automation variable i am able to open Instant messenger window, but i am not able to open conversation window(PC TO PC Calling), for that i had used IMessengerAdvanced class. upon calling create(IMsgAdv); iam getting error as
"could not create an instance of the OLE control or Automation server identified by GUID={ } 1.0:{ } : 'Microsoft office communicator 2007 API Type Library'.IMessengerAdvanced.
Check that the Ole Controlor Automation server is correctly installed and registered"

But Methods and properties of classes Messenger and IMessengerContact works fine. so will it be problem with Automation server ??

StartConversation method is only available in
Automation Server : Microsoft Office Communicator 2007 API Type Library
Automation Object : IMessengerAdvanced

Any help appreciated!!!
thanks In adv.