No Login to System Account for Postgres

Dear all ,

This is just a speculation
Can I run PostgreSQL super user with a system account thats not allowed
to login to the shell
With shell I mean this account would not be able to login but would
exist their for Postgresql to run.

If yes can anyone please tell me how to go about this.

Any help / URL would be most welcomed.

I am Using :
PostgreSQL 7.3.4
RH 9.0

--
Regards,
Vishal Kashyap

~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
I Know you believe my words so logon to Jabber.org
and add vishalkashyap(at)jabber(dot)org to your roster.
OR
Seek Me at 264360076
~*~*~*~*~*~*~*~*
I am usually called as Vishal Kashyap
but my Girlfriend calls me as Vishal CASH UP.
This is because others identify me because of my generosity
but my Girlfriend identify me because of my CASH.
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*