Hello Guys, it will be great if anyone of you can reply to my below question, I need answer urgently. Please

On Microsoft Office Communicator (OCS) 2007, I have the following questions:

• Are the chats saved on local machine (at client end) or are they saved on the server?
• If one of the two participants in the chat conversation has quit the organization, what is the way to retrieve it? Essentially, whose name comes in the 'From' section in the saved conversation history - is the person initiating the conversation or is there some other criteria? For example: Can it be like below chat conversation?
  

From:    Surname2, Firstname2 [firstname2.surname2@xyz.com]
Sent:     Thursday, September 29, 2011 3:56 PM
To:        SURNAME1 FIRSTNAME1; Surname2, Firstname2
Subject: XYZ

Surname1, Firstname1 [06:22]: Hi
Surname2, Firstname2 [06:22]: Hello

"Are the chats saved on local machine (at client end) or are they saved on the server?"

Chats can be saved in the conversation history folder of the Exchange inbox.  They can also be archived to a separate SQL server if this was configured in OCS.  Whether they're kept "locally" or not depends on if cached mode was enabled for Outlook or if they exported to PSTs.

"If one of the two participants in the chat conversation has quit the organization, what is the way to retrieve it? Essentially, whose name comes in the 'From' section in the saved conversation history - is the person initiating the conversation or is there some other criteria? For example: Can it be like below chat conversation?"

If we're talking about conversation history in Outlook, it might say "Conversation with [other person]".  It's not so much from anyone, as it contains participants.  If it's in SQL, because you enabled archiving and it hasn't been purged, then they will be individual messages to each other, so you'll search both from and to.  You may be able to retrieve it from Exchange, if the mailbox exists and they haven't deleted it, or from backups.

Thanks Anthony, appreciate your response. I have reframed my questions and posted as new questions on Microsoft Office Communicator to get the correct answer, please if you could take a look and see if you can help?

Your help is much appreciated!

-Bushra