Damn it people... behave! He just wanted help as you once did when you where new. People new to linux don't know that everything is gathered in the same place and that it get's auto-updated when new versions are available. In windows you need to do this manually by surfing the web which are a much more tedious.

@sudheesh25793: In linux or Maemo you get everything updated once you installed. Get Faster Application Manager which are better than the standard manager. You don't need to install anything for facebook chat (if i remeber right). Just add a new account in messaging.