postgreSQL startup on AIX4.2

I've got a little problem. I'd like to have a startup for postgreSQL that
starts postgreSQL when booting the machine. Of course this script would be
started by root so I shall change the uid to the appropriate account. On
FreeBSD it is done by su -l [loginname], where the '-l' option tells su to
simulate a full login, to discard the enviroment variables and set them
again(except for HOME, SHELL, PATH, TERM, and USER). How can I do that on
AIX4.2?

Thanks in advance

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Sebestyén Zoltán AKA Memphisto It all seems so stupid,
it makes me want to give up.
szoli(at)netvisor(dot)hu But why should I give up,
when it all seems so stupid?

MAKE INSTALL NOT WAR And please avoid Necrosoft Widows