5.3 - starting a process as a diff user

[J.D. Bronson]

I have a daemon that I need to start at boot under
/usr/local/etc/rc.d

and I need it to run as a specific user.

Currently, from root, I su - {userid} and then launch it
and then log out.

Can I make this automated in /usr/local/etc/rc.d and if so how?

Thanks :)

-JEFF