Originally Posted by leveex
what about if I want to set some program to start when I start KDE?
Make a script which launches your program with the options you want, and put it in $HOME/.kde/Autostart
Don't forget to set the execute permission on these programs.
Note that KDE can remember which programs were running the last time you shut it down, and re-launch them. The options for this are in the session management section of the kcontrol (control center) program.