postgres cannot access the server configuration file

I'm trying to start postgreSQL server on my Macbook Pro. I've
installed it using packages available here:
http://www.kyngchaos.com/wiki/software:postgres
But when I try to start up the server running "sudo SystemStarter
start PostgreSQL", I get the following message:

postgres cannot access the server configuration file
"/usr/local/pgsql/data/postgresql.conf": No such file or directory

And as a matter of fact, there is no such file in this directory. Do I
have to create it manually?

--
Sébastien Arbogast

http://www.sebastien-arbogast.com