Redhat 9.0 Service Shutdown

I start PostgreSQL in the services utility under Redhat 9.0 with no issues.
PostgreSQL runs properly but as soon as I log out PostgreSQL shuts down. It
seems that I always need to be logged in for it to stay running.

I am running:
    Redhat 9.0 Kernel 2.4.20-20.9
    PostgreSQL 7.3.4-3.rh19

I am not sure what else could be helpful.

I am fairly new to Linux and PostgreSQL and any pointers would be much
appreciated.

Regards,

Michael