Sorry, I should have been more clear.
When a group of users are having a conversation among themselves, and someone else joins the chat room... that someone else should not be able to see 'previously typed' conversation. He/she should see conversation starting after he/she has joined the room.
Another example, if Bruce, me, and another person are chatting... and we leave the chat room. An hour later a totally different user logs on to the chat room... that user should not be able to see what we typed... he should see a clear chat room starting from scratch.
I hope this clarifies what I meant in my initial post; I appreciate all your help.
Edited by iSec - 02 July 2011 at 3:43am