Live Chat ?

how we can chat like facebook in yii???Any extension etc or anything else please help????

Chat extensions.

Thanks alot for reply i downloaded yiichat extension from this.I followed the guide step by step, is recorded correctly but what I write in the chat box and the database is stored only 1 per entry instead of my text.and also tell how to connect with others users and other users reply???please help Thank in Advance

please help me :-[