Javier Perez <javier(dot)perez(at)jpmguides(dot)com> writes:
> ...
> I work on MacOSX 10.2 and I installed PostgreSQL 7.2.2. In my case
> PostgreSQL was include in a CD pack with another open source called
> Grass.
AFAICT, the copy of Postgres you have has been modified by the makers of
that CD. I suggest you contact them and ask them exactly how they
expect you to start Postgres --- because it sure looks from here like
your installation is broken :-(
regards, tom lane