pg_ctl question

I am using the /contrib/start-scripts/linux file to set
up postgres to automatically restart upon reboot.

I set it up /etc/init.d/postgres which calls pg_ctl

pg_ctl invokes postmaster

where do I set the -i option to allow tcp connection?

I am able to set the database to start upon boot, but
can not get pgAdmin to connect.

Thank you in advance for you help.

Jeff
CCT