[launchd-dev] noob question you all can answer

Hi all I am trying to write a daemon, but I cannot seem to get it to load at boot time. On the system log, it says something to the effect of "dubious file permissions". I asked by accident on the cocoa mailing list, it they say it's because my plist in /Library/LaunchDaemon is not owned by the root with 644 permissions; but I have sudo'd, chmod'ed, chown'd to no avail. I cannot change ownership of the file to root. If this is the real problem, how do I fix it? If not, how do I fix it? Thanks Nathan