Deployment Procedure On Windows On Linux and Windows

Suppose that created a project using Qt Creator(Qt v4.5.2) and It is ready to be deployed.
What are required Qt library files needed to be copied in Windows and linux assuming that
i have used only Qt Core and Qt GUI modules to create the project. As I am very new
(June 2009) to Qt please suggest a step-by-step procedure in both the platforms. I had reffered Qt Assistant and tried a dummy project with these files:
C:\Qt\2009.03\qt\bin\QtCore4.dll
C:\Qt\2009.03\qt\bin\QtGUI4.dll
It worked in my PC fine without any problems. It worked in my friends PC but it didnt show
the picture(using QLabel). When my another friend tried the app it Win XP gave him pesky "Dont Send" error. Please provide solution for these problems. And in Linux I do not know anything about the Linux Libraries Copying as in Windows DLL copying

image is not showing because of missing jpeg (or other file format) plugins.
read Qt assitant about how to deploy qt plugins..

search the forum, i am sure u will find everything... but qt assistant should be enough

Thank you for replying

Please Explain What is Jpeg plugin?

you will take less time if you digg more in qtassistant rather than on this forum
http://doc.qtsoftware.com/4.5/deploy...tml#qt-plugins

Thank you very much to Mr. Death:):):)