I am not sure about your question, but I will take a shot.
Yak-on is a IM product that currently supports AIM and MSN IM. When you have it running in the background and the phone in in the holster. If you get a incoming message, the phone will vibrate and you get a pop-up with the username that sent the message. When you click on ok, it takes you into the chat winder.
Is that what you are asking? www.yak-on.com
is where you can download a copy to test.