Network chat system with pop-up window

[kernel.roy]

Hi all,
I am new in Qt. I want to develop a network chat system using Qt in windows with pop-up window similar to yahoo messenger. Please anyone give me some resources with details description.

[tbscope]

This is a very broad question.
And it's impossible to give an answer because it is so broad.

See http://doc.qt.nokia.com/4.6/desktop-integration.html for system tray icons
And for the chat program itself, the rest of the qt documentation.

Do you have any specific question?