That is not working. I run KDE 3.5 (Trinity) and although the Systems Settings/Advanced/Service Manager thing displays a list of my current services, it provides no way for me to add new ones.
I googled and found a tip about using a program called sysv-rc-conf. It's CLI, but it builds a kind of a curses table and let me add Firestarter. But I rebooted and Firestarter did not run.
I found a new path: Control Center > System Administration > System Services. I can add services there. Well, hopefully I can. Firestarter was there already, it just wasn't set to run at startup. I toggled it, but haven't rebooted yet. There is a "Start Service" button, I used it, but then a pop-up dialog tells me the command failed. No explanation is given.
Any other ideas? Anyone?