Launching application after booting

II would like to know how to launch automatically an application just after booting? I use openSUSE 11.0 with KDE 3.5.

Well, for autostart in KDE there’s this link: SDB:Applications autostart in KDE - openSUSE

Thank you for your answer. I was able to do what I wanted. I had to search in the SDB before posting a question!