QT application GUI -- automatic start -- linux

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http://stackoverflow.com – I need to run my QT GUI application immediately when my linux system starts. I do not need any other things apart from this QT GUI application .. no need of desktop. Previously i have started daemo using update-rc.d command but i do not know how to start GUI and i do not have much knowledge about X11. I went through net & found two link :-- 1> running a qt application at startup This is telling to create desktop entry file for you... but as i do not need desktop. And only want my GUI to run. So this is not the solution which i am looking for. 2> http://www.qtcentre.org/threads/28564 (HowTos)