Create shortcut, add to the dock after install on Mac

Hello everybody, I've ported my Qt 4.3 application on Mac OS and it works correctly fine. After I've created a setup which install my application and other required files. Now I'm searching help for 3 things :
1) How I can customize my application icon and give it a specific icon
2) How to create a desktop shotcut of my application after installation
3) How to add my application to the Dock.
I'm on Mac X 10.4.6, I'm using Xcode 2.0 and I've created the setup with PackageMaker.
Many thanks for your collaboration.
Best regards.

search Finder +Mac on wiki ...
and qt http://doc.trolltech.com/4.1/deploym...e-dependencies
and use applescript to set picture backround on desktop or fix icon on dock....

and search QMAKE_INFO_PLIST on http://www.google.com/codesearch to grab example...