How to start an application when the fedora start
 

I have one project in QT Designer with extension .PRO, How to start this application when linux start with root session, I used KDE, I like to know, how to do this??

I don't know if is the same case of GENOME, or if I have to edit the file /etc/rc.d/rc.local and add a single line to the end of the file which starts the program.

My program start has a Graphical User Interface and I can't start in KDE, I tried to GENOME with preferences--- sessions, It's work, but I need to know how to do this in KDE

Some body, help me please and give me an example code!!!!!